MailMan Xojo Plugin Reference Documentation
MailMan
Current Version: 11.4.0
The Chilkat MailMan class is reponsible for sending email though SMTP and receiving/managing email on POP3 servers.
Object Creation
Dim mailMan As New Chilkat.MailMan
Properties
AbortCurrent
Set this property to to request that the currently running
operation be aborted.
True
This applies to methods that may take time to complete, such as methods that perform network communication or lengthy file operations. Methods that always complete quickly are generally not affected.
If no method is currently running, the property is automatically reset to
when the next method call begins. When an abort actually
occurs, Chilkat resets this property to False.
False
Both synchronous and asynchronous method calls can be aborted. A synchronous method can be aborted by setting this property from another thread.
topAllOrNone
Controls whether an email should be sent when one or more recipients are rejected by the SMTP server.
The default value is , which means Chilkat continues sending
even if some recipients are rejected.
False
When set to , the email is not sent to any recipients if the
SMTP server rejects any recipient address.
True
Important: This property only works when SMTP pipelining is
disabled. Because SmtpPipelining is by default,
set TrueSmtpPipelining = when all-or-none behavior is required.
False
Note: SMTP servers do not always verify recipient addresses. Even when they do, the server can usually verify only addresses within domains it controls.
AutoFix
When , Chilkat automatically adjusts common SMTP and POP3
SSL/TLS settings based on the configured port numbers.
True
- If
SmtpPort = 465, Chilkat setsStartTLS =andFalseSmtpSsl =.True - If
SmtpPort = 25, Chilkat setsSmtpSsl =.False - If
MailPort = 995, Chilkat setsPopSsl =.True - If
MailPort = 110, Chilkat setsPopSsl =.False
The default value is .
True
AutoGenMessageId
Controls whether Chilkat automatically generates a unique
Message-ID header when an email is sent.
The default behavior is to generate a new unique Message-ID at
send time. This allows the same Email object to be reused without
accidentally sending duplicate message IDs.
If duplicate message IDs are used, some SMTP servers may treat the message as a duplicate and discard it.
When automatic generation is enabled, calling
GetHeaderField("Message-ID") before sending will not necessarily
show the actual message ID that Chilkat sends.
Set this property to to prevent Chilkat from automatically
generating the FalseMessage-ID header.
AutoSmtpRset
When , Chilkat automatically sends the SMTP
TrueRSET command before sending a new email over an already-open SMTP
connection.
This helps ensure the SMTP session is in a clean state before the next email is sent.
The default value is .
False
Note: This property only applies when reusing an existing SMTP connection.
topAutoUnwrapSecurity
Controls whether Chilkat automatically unwraps digitally signed or encrypted email when the message is downloaded or loaded from MIME.
The default value is . When enabled, Chilkat verifies
signatures and decrypts encrypted content when possible. The results are made
available through the email object's security-related properties and methods.
True
Set this property to if you want signed or encrypted
attachments, such as False.p7m or .p7s files, to remain as
ordinary attachments.
Important: Signature verification and decryption must occur when the original MIME is first loaded. After MIME is parsed into Chilkat's internal email object format, the exact original MIME bytes are no longer available, and the signature can no longer be verified.
topClientIpAddress
Specifies the local IP address to use when connecting from a computer that has multiple network interfaces or multiple IP addresses.
For most computers, this property should be left unset. Chilkat will automatically use the default local IP address.
The value should be a numeric IP address, such as
165.164.55.124, not a hostname.
ConnectFailReason
Contains a numeric code describing the result of the last connection attempt. This applies to the last connection made, or attempted, by any method.
| Code | Meaning |
|---|---|
0 | Success. |
1 | Empty hostname. |
2 | DNS lookup failed. |
3 | DNS timeout. |
4 | Aborted by the application. |
5 | Internal failure. |
6 | Connection timed out. |
7 | Connection rejected, or failed for another reason. |
100 | TLS internal error. |
101 | Failed to send the TLS client hello. |
102 | Unexpected TLS handshake message. |
103 | Failed to read the TLS server hello. |
104 | No server certificate was received. |
105 | Unexpected TLS protocol version. |
106 | Server certificate verification failed. |
107 | Unacceptable TLS protocol version. |
109 | Failed to read TLS handshake messages. |
110 | Failed to send client certificate handshake message. |
111 | Failed to send client key exchange handshake message. |
112 | Client certificate private key is not accessible. |
113 | Failed to send client certificate verify handshake message. |
114 | Failed to send change cipher spec handshake message. |
115 | Failed to send finished handshake message. |
116 | The server's finished message is invalid. |
ConnectTimeout
The maximum number of seconds to wait while attempting to connect to an SMTP or POP3 server.
The default value is 30 seconds.
DebugLogFilePath
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
DsnEnvid
The DsnEnvid property specifies the SMTP DSN
ENVID value, which is an arbitrary identifier attached to the
SMTP envelope. The same value is typically returned in DSN responses so the
sending application can correlate delivery notifications with the original
outbound email.
Common choices for DsnEnvid include:
-
An internal message ID:
MSG-10004521 -
A GUID or UUID:
550e8400-e29b-41d4-a716-446655440000 -
An order or transaction number:
ORDER-847291 -
A timestamp-based identifier:
MAIL-20260515-153045-001 -
A composite identifier combining application, customer, and message IDs:
billing|cust-9182|invoice-44381
The value should uniquely identify the outbound email within your application.
It does not need to match the MIME Message-ID header, although
some applications choose to use the same identifier for both.
About SMTP DSN
SMTP DSN means Delivery Status Notification. It is an optional SMTP service extension defined by RFC 3461 that allows the sender to request delivery-status reports from the SMTP server.
DSN allows an application to request notifications such as:
- Successful delivery
- Delivery failure
- Delayed delivery
It also allows the sender to specify whether the returned notification should include the full original message or only the message headers.
In Chilkat.MailMan, DSN behavior is controlled using:
DsnEnvid— sets the SMTPENVIDenvelope identifier.DsnNotify— controls when notifications are requested, such asSUCCESS,FAILURE,DELAY, orNEVER.DsnRet— controls whether DSN responses include the full message or only headers.
DSN is an optional SMTP extension and is not supported by all SMTP servers.
A server supports DSN only if it advertises the DSN capability in
response to the SMTP EHLO command.
The IsSmtpDsnCapable method can be used to determine whether the
SMTP server supports DSN.
Even when DSN is supported, some SMTP servers or downstream mail systems may ignore or partially honor DSN requests.
topDsnNotify
Specifies the SMTP DSN NOTIFY parameter used when sending email.
The value may be left empty, set to NEVER, or set to a
comma-separated combination of SUCCESS, FAILURE, and
DELAY.
DsnRet
Specifies the SMTP DSN RET parameter used when sending email.
The value may be left empty, set to FULL to request the full
message in DSN notifications, or set to HDRS to request only the
message headers.
EmbedCertChain
When , Chilkat embeds the signing certificate chain in signed
email.
True
Certificates are included up to, but not including, the root certificate. If
IncludeRootCert is also , the root CA certificate
is included as well.
True
The default value is False
EnableSecrets
Enables automatic resolution of passwords and credentials from secure local storage.
When set to , supported properties and methods can accept a
Chilkat secret specification string instead of a literal password. Secret
specification strings begin with True!!.
Chilkat resolves secrets from:
- Windows Credential Manager on Windows.
- Apple Keychain on macOS.
The secret specification format is: !![appName|]service[|domain]|username
This applies to PopPassword, SmtpPassword,
HttpProxyPassword, SocksPassword,
PopPasswordBase64, and SshAuthenticatePw.
The default value is .
False
Filter
Specifies a filter expression applied by methods such as
LoadXmlFile, LoadXmlString, LoadMbx,
CopyMail, and TransferMail.
When a filter is present, only emails matching the expression are returned.
For TransferMail, only matching emails are removed from the mail
server.
Example expressions:
Body like "mortgage rates*"
Subject contains "update" and From contains "chilkat"
To = "info@chilkatsoft.com"
Rules for filter expressions:
- Any MIME header field name may be used. Header names are case-insensitive.
- Literal strings are enclosed in double quotes.
- String matching is case-insensitive.
- The
*wildcard matches zero or more characters. - Parentheses may be used to control precedence.
- Logical operators are
AND,OR, andNOT. - String comparison operators include
CONTAINSandLIKE.
Note: Filtering works on text strings only, not dates or numbers.
HeartbeatMs
Specifies the interval, in milliseconds, between AbortCheck
event callbacks.
This allows an application to periodically decide whether a long-running operation should be aborted.
The default value is 0, which means no AbortCheck
callbacks are generated.
HeloHostname
Specifies the hostname sent in the SMTP EHLO or
HELO command.
The default value is an empty string, which causes Chilkat to use the local computer's hostname.
topHttpProxyAuthMethod
HttpProxyAuthMethod
Specifies the authentication method used when connecting through an HTTP proxy that requires authentication.
Valid values are Basic and NTLM.
HttpProxyDomain
Specifies the optional NTLM domain when using NTLM authentication with an HTTP proxy.
topHttpProxyHostname
Specifies the hostname or IPv4 address of the HTTP proxy to use.
topHttpProxyPassword
Specifies the password used when authenticating to an HTTP proxy.
topHttpProxyPort
HttpProxyUsername
Specifies the username used when authenticating to an HTTP proxy.
topImmediateDelete
Controls whether POP3 deletions are finalized immediately.
The default value is . When enabled, any method that deletes
email from the POP3 server also sends a TrueQUIT command and closes
the POP3 session so the deletion is committed immediately.
In POP3, the DELE command only marks a message for deletion. The
message is not actually deleted until the session ends with QUIT.
If ImmediateDelete is set to , your application
must call FalsePop3EndSession to finalize the deletions.
IncludeRootCert
Controls whether the root CA certificate is included in the S/MIME signature of a signed email.
This property only applies when EmbedCertChain is
.
True
IsPop3Connected
Returns if Chilkat believes the POP3 connection is still
open.
True
Accessing this property does not send any command to the POP3 server. If the
server has disconnected but Chilkat has not yet attempted further
communication, this property may still return .
True
To verify that the POP3 connection is actually alive, call
Pop3Noop.
IsSmtpConnected
Returns if Chilkat believes the SMTP connection is still
open.
True
Accessing this property does not communicate with the SMTP server. A lost connection may not be detected until the next SMTP command is sent.
To verify that the SMTP connection is actually alive, call
SmtpNoop.
LastErrorHtml
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
Indicates the success or failure of the most recent method call: True means success, False means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages. Note: This property does not apply to methods that return integer values or to boolean-returning methods where the boolean does not indicate success or failure.
LastSmtpStatus
Contains the last SMTP status code returned by the SMTP server during the most recent SMTP operation.
SMTP status codes are numeric reply codes defined by the SMTP protocol. They
indicate the result of SMTP protocol commands such as EHLO,
AUTH, MAIL FROM, RCPT TO, and
DATA.
In general:
- 2xx — Success. The requested action completed successfully.
- 3xx — Intermediate success. Additional information or authentication data is required.
- 4xx — Temporary failure. The operation failed, but retrying later may succeed.
- 5xx — Permanent failure. The request was rejected and retrying will usually not help unless something changes.
LastSmtpStatusMsg
Contains the text message associated with the last SMTP status code received from the server.
topLogMailReceivedFilename
Specifies a local file path where Chilkat writes each message exactly as it was received from the POP3 server.
This is useful for debugging problems involving MIME structure, encodings, attachments, or server behavior.
topLogMailSentFilename
Specifies a local file path where Chilkat writes the exact MIME message sent to the SMTP server.
This is useful for inspecting the final MIME produced by Chilkat.
topMailHost
Specifies the POP3 server hostname or IP address.
Do not include http:// or https://. The value should
be a hostname such as pop.example.com or an IPv4/IPv6 address.
MailPort
Specifies the POP3 server port number.
The default value is 110.
The standard POP3 ports and their associated
Chilkat.MailMan property settings are described below.
Port 995 — POP3 over Implicit SSL/TLS
Uses implicit SSL/TLS, meaning the TLS connection is established immediately when the TCP connection is opened.
mailman.MailPort = 995; mailman.PopSsl = true;
Port 110 — Standard Unencrypted POP3
Uses a normal unencrypted POP3 connection.
mailman.MailPort = 110; mailman.PopSsl = false; mailman.Pop3Stls = false; mailman.Pop3StlsIfPossible = false;
Port 110 — POP3 with Explicit TLS via STLS
The connection begins unencrypted and is upgraded to TLS using the POP3
STLS command.
mailman.MailPort = 110; mailman.PopSsl = false; mailman.Pop3Stls = true;
Port 110 — Opportunistic STLS
Attempts to upgrade the connection to TLS using STLS if the
POP3 server supports it. Otherwise, the connection remains unencrypted.
mailman.MailPort = 110; mailman.PopSsl = false; mailman.Pop3StlsIfPossible = true;
Important: PopSsl and
Pop3Stls represent two different approaches to TLS security:
-
PopSsl = truemeans the connection begins as SSL/TLS from the very start (implicit TLS). -
Pop3Stls = truemeans the connection begins unencrypted and is later upgraded to TLS using the POP3STLScommand (explicit TLS).
These two approaches are mutually exclusive and should not both be enabled at the same time.
Modern POP3 servers most commonly use either:
995withPopSsl = true, or110withPop3Stls = true.
MaxCount
Limits the number of messages Chilkat attempts to retrieve from the POP3 server in a single method call.
This is useful for large mailboxes. For example, setting
MaxCount = 100 allows an application to download messages in
batches of 100.
OAuth2AccessToken
Specifies the OAuth2 access token to be used for POP3 or SMTP XOAUTH2 authentication.
When this property is set, Chilkat will use the SMTP or POP3
AUTH XOAUTH2 authentication mechanism if supported by the
server.
For POP3 XOAUTH2 authentication:
-
PopPasswordshould be left empty, or explicitly set to the empty string. -
SmtpPasswordshould be left unset, or set to the empty string.
The OAuth2 access token is sent as a bearer token during the
AUTH XOAUTH2 authentication exchange.
OpaqueSigning
Controls the MIME format used for digitally signed email.
When set to , Chilkat creates a
Falsemultipart/signed email. In this format, the original email
content remains visible as a normal MIME body part, and the digital
signature is included as a separate MIME part.
The top-level MIME Content-Type header will look similar to:
Content-Type: multipart/signed;
protocol="application/pkcs7-signature";
micalg=sha-256;
boundary="------------040808030405050402070604"
This is commonly referred to as a detached signature because the signed content exists separately from the signature itself.
When set to , Chilkat creates an opaque signed email
using PKCS#7 signed-data format. In this case, the original MIME content is
encapsulated inside the PKCS#7 signature structure.
True
The top-level MIME Content-Type header will look similar to:
Content-Type: application/pkcs7-mime;
smime-type="signed-data";
name="smime.p7m"; micalg=sha-256
This format is historically known as opaque signing because the original message content is wrapped inside the PKCS#7 signed object and is not directly visible as ordinary MIME body parts.
The default value is .
True
P7mEncryptAttachFilename
Specifies the filename used in the Content-Disposition header
when sending a PKCS#7 encrypted email.
The default value is smime.p7m.
P7mSigAttachFilename
Specifies the filename used in the Content-Disposition header
when sending an opaque signed PKCS#7 email.
The default value is smime.p7m.
P7sSigAttachFilename
Specifies the filename used in the Content-Disposition header
when sending a signed email with a detached PKCS#7 signature.
The default value is smime.p7s.
PercentDoneScale
This property is only valid in programming environments and languages that allow for event callbacks.
Sets the value that represents 100% completion for
PercentDone event callbacks.
The default value is 100, meaning progress values range from
0 to 100. Setting this property to a larger value
provides finer granularity. For example, setting
PercentDoneScale = 1000 allows progress to be reported in
tenths of a percent.
For example, if PercentDoneScale = 1000, then a callback value
of 453 represents 45.3% complete.
The value is clamped to a minimum of 10 and a maximum of
100000.
Pop3SessionId
Returns 0 when no POP3 session is active.
Otherwise, returns a positive integer that increments each time a new POP3 session is established. This can be used to detect whether a new session has started.
topPop3SessionLog
Contains the accumulated raw POP3 commands sent to the server and the raw responses received from the server.
This property is read-only. To clear it, call
ClearPop3SessionLog.
Pop3SPA
Controls whether SPA, also known as NTLM authentication, is used for POP3.
Set this property to to use SPA authentication. No other
programming changes are required.
True
The default value is .
False
Note: If SPA/NTLM authentication fails, set
Global.DefaultNtlmVersion = 1 and retry.
Pop3SslServerCertVerified
Indicates whether the POP3 server's SSL/TLS certificate was successfully verified during the connection.
This property is meaningful only when connecting via SSL/TLS.
topPop3Stls
Controls whether Chilkat requires the POP3 connection to be upgraded to TLS
using the STLS command.
When set to , Chilkat initially connects without encryption,
typically on port True110, and then sends STLS to
convert the connection to TLS.
Use this only with POP3 servers known to support STLS. When this
property is , TruePopSsl should be
.
False
The default value is .
False
Pop3StlsIfPossible
Controls whether Chilkat uses POP3 STLS automatically when the
server supports it.
If the server supports STLS, the connection is upgraded to TLS.
If the server does not support STLS, the connection remains
unencrypted.
The default value is .
False
PopPassword
Specifies the POP3 password.
On Windows, if Pop3SPA is enabled, both PopUsername and
PopPassword may be set to "default" to use the
credentials of the current logged-on Windows user.
PopPasswordBase64
Provides a way to specify the POP3 password as a Base64-encoded string.
topPopSsl
Controls whether implicit SSL/TLS is used when connecting to the POP3 server.
When set to , the TLS connection is established immediately
when connecting. The POP3 SSL/TLS port is typically True995.
The default value is .
False
PopUsername
Specifies the POP3 login name.
On Windows, if Pop3SPA is enabled, both PopUsername and
PopPassword may be set to "default" to use the
credentials of the current logged-on Windows user.
PreferIpv6
Controls whether IPv6 is preferred over IPv4 when both are available for a hostname.
The default value is , which means IPv4 is preferred.
False
ReadTimeout
Specifies the maximum number of seconds to wait when the SMTP or POP3 server stops responding.
The default value is 30 seconds.
RequireSslCertVerify
Controls whether Chilkat requires SMTP and POP3 SSL/TLS server certificates to be successfully verified.
When set to , Chilkat rejects the connection if the server
certificate is expired or if the certificate signature cannot be verified.
True
The default value is .
False
This property applies only to SSL/TLS connections.
topResetDateOnLoad
Controls whether the email's Date header is reset to the current
date and time when an email is loaded.
This applies to methods such as LoadMbx, LoadEml,
LoadMime, LoadXml, and LoadXmlString.
The default value is .
False
SendBufferSize
Specifies the buffer size used by the underlying TCP/IP socket when sending data.
The default value is 32767.
SendIndividual
Controls how email is sent to distribution lists.
When , Chilkat sends one email per recipient. Each message
has the recipient's address in the TrueTo header.
When , Chilkat sends messages in batches of up to 100 BCC
recipients at a time.
False
For example, a distribution list with 350 recipients would result in four messages: three with 100 BCC recipients, and one with 50 BCC recipients.
The default value is .
True
SizeLimit
Specifies the maximum size, in bytes, of messages Chilkat will retrieve from a POP3 server.
Messages larger than this limit are not downloaded.
The default value is 0, which means no size limit.
SmtpAuthMethod
Specifies the SMTP authentication method to use.
This property should usually be left empty so Chilkat can automatically choose the most secure method advertised by the SMTP server.
If the server does not advertise authentication methods, or if a specific
method must be forced, set this property to one of:
NONE, LOGIN, PLAIN,
CRAM-MD5, or NTLM.
Note: If NTLM authentication fails, set
Global.DefaultNtlmVersion = 1 and retry.
SmtpFailReason
Contains a keyword describing the result or failure reason for the last SMTP operation.
Success: The method succeeded.
Failed: A general failure occurred.
NoValidRecipients: The SMTP server rejected all recipients.
NoRecipients: No To, CC, or BCC recipients were provided.
SomeBadRecipients: AllOrNone is True and some recipients were rejected.
Aborted: The application aborted the operation.
NoFrom: No FROM address was provided.
FromFailure: The server rejected the MAIL FROM command.
NoCredentials: Required credentials were not provided.
AuthFailure: SMTP authentication failed.
DataFailure: The server returned an error in response to DATA.
NoSmtpHostname: No SMTP hostname or IP address was provided.
StartTlsFailed: Failed to upgrade the connection using STARTTLS.
ConnectFailed: Could not establish the TCP or TLS connection.
GreetingError: The SMTP server returned an error in the initial greeting.
ConnectionLost: The SMTP connection was lost during the operation.
Timeout: A socket read or write timeout occurred.
RenderFailed: The email could not be rendered for sending.
NotUnlocked: UnlockBundle was not called on at least one MailMan instance.
InternalFailure: An internal failure occurred and should be reported to Chilkat support.
SmtpHost
Specifies the SMTP server hostname or IP address.
Do not include http:// or https://. The value may be
a hostname, IPv4 address, or IPv6 address.
SmtpLoginDomain
Specifies the Windows domain to use when logging in to an SMTP server with NTLM authentication.
Leave this property empty if no domain is required.
topSmtpMailFrom
Specifies the SMTP envelope sender address used in the
MAIL FROM command.
This address receives bounce messages and identifies the originator of the
SMTP transaction. It may differ from the From MIME header.
If left empty, Chilkat uses the email address from the message's
From header.
SMTP servers may reject the envelope sender based on DNS, SPF, or other server policy checks.
topSmtpPassword
Specifies the password used for SMTP authentication.
Chilkat supports
SMTP authentication methods such as LOGIN, PLAIN,
CRAM-MD5, and NTLM, and normally chooses the most
secure available method automatically.
If NTLM authentication is used, SmtpUsername and
SmtpPassword may be set to the keyword "default" to use the
current Windows logged-on credentials.
SmtpPipelining
Controls whether SMTP pipelining is used when the server advertises support for it.
The default value is .
True
Set this property to to prevent SMTP pipelining. This is
required when using FalseAllOrNone.
SmtpPort
Specifies the SMTP server port.
The default value is 25. If using implicit SSL/TLS with
SmtpSsl = , the common port is True465.
SmtpSessionLog
Contains the accumulated raw SMTP commands sent to the server and raw responses received from the server.
This property is read-only. To clear it, call
ClearSmtpSessionLog.
SmtpSsl
Controls whether Chilkat uses implicit SSL/TLS when connecting to the SMTP server.
When set to , the TLS connection is established immediately
when the TCP connection is opened.
True
SmtpSslServerCertVerified
Indicates whether the SMTP server's SSL/TLS certificate was successfully verified during the connection.
This property is meaningful only when an SSL/TLS SMTP connection is used.
topSmtpUsername
Specifies the username used for SMTP authentication.
If SmtpAuthMethod is NTLM,
SmtpUsername and SmtpPassword may be set to the keyword
"default" to use the current Windows logged-on credentials.
SocksHostname
Specifies the SOCKS4 or SOCKS5 proxy hostname or IPv4 address.
This property is used only when SocksVersion is set to
4 or 5.
SocksPassword
Specifies the SOCKS5 proxy password, if authentication is required.
SOCKS4 does not use passwords, so this property applies only to SOCKS5.
topSocksPort
Specifies the SOCKS proxy port.
The default value is 1080. This property applies only when
SocksVersion is set to 4 or 5.
SocksUsername
Specifies the SOCKS4 or SOCKS5 proxy username.
This property is used only when SocksVersion is set to
4 or 5.
SocksVersion
Specifies whether a SOCKS proxy is used.
0— no SOCKS proxy is used. This is the default.4— connect through a SOCKS4 proxy.5— connect through a SOCKS5 proxy.
SoRcvBuf
Sets the socket receive buffer size.
The default value is 4194304.
This property should normally be left unchanged. It may be increased if
download performance is slow. Values should preferably be multiples of
4096.
SoSndBuf
Sets the socket send buffer size.
The default value is 262144.
This property should normally be left unchanged. It may be increased if
upload performance is slow. Testing values such as 512K or
1MB is reasonable. Values should preferably be multiples of
4096.
SslAllowedCiphers
Specifies the TLS cipher suites Chilkat is allowed to offer when establishing SSL/TLS connections.
The default value is an empty string, meaning Chilkat may offer all implemented cipher suites. To restrict the allowed ciphers, set this property to a comma-separated list of cipher suite names, ordered by preference.
The cipher suites supported by Chilkat are:
TLS 1.3 Cipher Suites
TLS_AES_128_GCM_SHA256TLS_CHACHA20_POLY1305_SHA256TLS_AES_256_GCM_SHA384
ChaCha20-Poly1305 Cipher Suites
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
AES-GCM Cipher Suites
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256TLS_DHE_RSA_WITH_AES_128_GCM_SHA256TLS_RSA_WITH_AES_128_GCM_SHA256TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384TLS_DHE_RSA_WITH_AES_256_GCM_SHA384TLS_RSA_WITH_AES_256_GCM_SHA384TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
AES-128 CBC Cipher Suites
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHATLS_DHE_RSA_WITH_AES_128_CBC_SHATLS_RSA_WITH_AES_128_CBC_SHATLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256TLS_DHE_RSA_WITH_AES_128_CBC_SHA256TLS_RSA_WITH_AES_128_CBC_SHA256TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHATLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
AES-256 CBC Cipher Suites
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHATLS_DHE_RSA_WITH_AES_256_CBC_SHATLS_RSA_WITH_AES_256_CBC_SHATLS_DHE_RSA_WITH_AES_256_CBC_SHA256TLS_RSA_WITH_AES_256_CBC_SHA256TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHATLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
Important: The client offers a list of allowed cipher suites, but the server chooses the final cipher suite from that list.
This property can also include special keywords:
rsa1024— reject server certificates with RSA keys smaller than 1024 bits.rsa2048— reject server certificates with RSA keys smaller than 2048 bits.secure-renegotiation— require secure renegotiation as defined by RFC 5746.best-practices— use Chilkat's current best-practice cipher policy.
The best-practices setting currently requires RSA server keys of
at least 1024 bits, requires secure renegotiation, and disallows RC4, DES,
and 3DES ciphers.
Example:
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA, rsa1024, secure-renegotiation
top
SslProtocol
Selects the SSL/TLS protocol version used for secure SMTP and POP3 connections.
Possible values include:
defaultTLS 1.3TLS 1.2TLS 1.1TLS 1.0SSL 3.0TLS 1.3 or higherTLS 1.2 or higherTLS 1.1 or higherTLS 1.0 or higher
The default value is default, which allows Chilkat to choose the
protocol dynamically based on the server's requirements.
Choosing an exact protocol version can cause the connection to fail unless
that exact version is negotiated. In most cases, using an
or higher setting is preferable.
StartTLS
Controls whether Chilkat requires SMTP STARTTLS.
When set to , Chilkat connects to the SMTP server normally
and then sends the TrueSTARTTLS command to upgrade the connection to
SSL/TLS before authenticating and sending email.
The default value is .
False
This property applies to SMTP only, not POP3.
StartTLSifPossible
Controls whether Chilkat uses SMTP STARTTLS automatically when the server supports it.
When set to , Chilkat upgrades the SMTP connection to TLS if
the server advertises STARTTLS support. If STARTTLS is not supported, the
connection remains unencrypted.
True
The default value is .
True
Use StartTLS = instead when encryption is required and the
connection should fail if STARTTLS is unavailable.
True
This property applies to SMTP only, not POP3.
topTlsCipherSuite
Contains the current or most recently negotiated TLS cipher suite.
If no TLS connection has been established, or if the TLS connection attempt failed, this property is empty.
Example value:
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
top
TlsPinSet
Specifies the expected SPKI fingerprints for TLS public key pinning.
During the TLS handshake, Chilkat compares the server certificate's public key fingerprint against this pin set. If none of the pins match, the TLS handshake is aborted and the connection fails.
The format is:
hash_algorithm, encoding, SPKI_fingerprint_1, SPKI_fingerprint_2, ...
Example with one SHA-256 Base64 pin:
sha256, base64, lKg1SIqyhPSK19tlPbjl8s02yChsVTDklQpkMCHvsTE=
Example with two SHA-256 Base64 pins:
sha256, base64, 4t37LpnGmrMEAG8HEz9yIrnvJV2euVRwCLb9EH5WZyI=, 68b0G5iqMvWVWvUCjMuhLEyekM5729PadtnU5tdXZKs=
Supported hash algorithms include sha1, sha256,
sha384, sha512, md2, md5,
haval, ripemd128, ripemd160,
ripemd256, and ripemd320.
Supported encodings include base64, hex, and other
Chilkat-supported encodings.
TlsVersion
Contains the current or most recently negotiated TLS protocol version.
If no TLS connection has been established, or if the TLS connection attempt failed, this property is empty.
Possible values include SSL 3.0, TLS 1.0,
TLS 1.1, TLS 1.2, and TLS 1.3.
UncommonOptions
Provides a comma-separated list of uncommon option keywords.
This property defaults to an empty string and should normally remain empty.
-
ProtectFromVpn— introduced in v9.5.0.80. On Android, bypasses any installed or active VPN. -
SmtpLoginAnsi— introduced in v9.5.0.97. Causes SMTP login and password strings containing non-ASCII characters to be sent using ANSI encoding instead of UTF-8. This restores the older Chilkat behavior for SMTP servers that expect ANSI credentials.
UseApop
Controls whether Chilkat automatically uses APOP authentication when the POP3 server supports it.
The default value is .
False
VerboseLogging
If set to True, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is False. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
Version
Methods
AddPfxSourceBd
Adds a PFX/PKCS#12 certificate store to the MailMan object's internal list of sources used for locating certificates and private keys.
The PFX data is supplied in the bd object, which should contain the bytes of a .pfx or .p12 file.
The added PFX source is searched when Chilkat needs a certificate and private key for operations such as:
- Decrypting S/MIME encrypted email
- Creating digitally signed email
Multiple PFX sources can be added by calling this method once for each PFX.
On Windows, the registry-based Windows certificate stores are automatically searched when locating certificates and private keys. Therefore, if the required certificate and private key are already installed in the Windows certificate store, explicitly adding a PFX source is often unnecessary.
On macOS, the Apple Keychain is also searched automatically. If the required certificate and private key are already available in the Apple Keychain, it is likewise unnecessary to explicitly add a PFX source.
The password argument specifies the password required to open the PFX.
Returns True for success, False for failure.
topAddPfxSourceData
Adds a PFX/PKCS#12 certificate store to the MailMan object's internal list of sources used for locating certificates and private keys.
The pfxData argument contains the bytes of a .pfx /
.p12 file.
The added PFX source is searched when Chilkat needs a certificate and private key for operations such as:
- Decrypting S/MIME encrypted email
- Creating digitally signed email
Multiple PFX sources can be added by calling this method once for each PFX.
On Windows, the registry-based Windows certificate stores are automatically searched when locating certificates and private keys. Therefore, if the required certificate and private key are already installed in the Windows certificate store, explicitly adding a PFX source is often unnecessary.
On macOS, the Apple Keychain is also searched automatically. If the required certificate and private key are already available in the Apple Keychain, it is likewise unnecessary to explicitly add a PFX source.
The password argument specifies the password required to open the PFX.
Returns True for success, False for failure.
topAddPfxSourceFile
Adds a PFX/PKCS#12 file to the MailMan object's internal list of sources used for locating certificates and private keys.
The pfxFilePath argument is the path to a .pfx or .p12 file.
The added PFX source is searched when Chilkat needs a certificate and private key for operations such as:
- Decrypting S/MIME encrypted email
- Creating digitally signed email
Multiple PFX sources can be added by calling this method once for each PFX.
On Windows, the registry-based Windows certificate stores are automatically searched when locating certificates and private keys. Therefore, if the required certificate and private key are already installed in the Windows certificate store, explicitly adding a PFX source is often unnecessary.
On macOS, the Apple Keychain is also searched automatically. If the required certificate and private key are already available in the Apple Keychain, it is likewise unnecessary to explicitly add a PFX source.
The password argument specifies the password required to open the PFX.
Returns True for success, False for failure.
topCheckMail
Returns the number of emails currently available in the POP3 mailbox. Returns -1 if an error occurs.
If this method fails, use VerifyPopConnection to test basic TCP/IP connectivity to the POP3 server, and
VerifyPopLogin to test whether the POP3 login succeeds. The Verify* methods are intended as
diagnostic helpers when a POP3 operation returns an error.
CheckMailAsync (1)
Creates an asynchronous task to call the CheckMail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
ClearBadEmailAddresses
Clears the MailMan object's in-memory list of bad email addresses.
When an email-sending method is called, email addresses rejected by the SMTP server are cached in the MailMan object.
These rejected addresses can be retrieved by calling GetBadEmailAddresses. This method clears that cached
list so the object starts with no remembered bad addresses.
ClearPop3SessionLog
Clears the current contents of the Pop3SessionLog property.
ClearSmtpSessionLog
Clears the current contents of the SmtpSessionLog property.
CloseSmtpConnection
Explicitly closes the current SMTP connection. Before closing the socket connection, Chilkat sends the SMTP
QUIT command to the server.
Calling this method is optional in most applications. The MailMan object automatically opens an SMTP connection when an
email-sending method is called and no connection is already open. The connection is then kept open so subsequent sends
can reuse it. For example, if an application calls SendEmail ten times, the first call opens the SMTP
connection, and the following calls send over the same connection.
If an SMTP-related property changes, such as the hostname, username, password, port, or SSL/TLS settings, the existing connection is closed and a new connection is established the next time an email-sending method is called.
The SMTP connection is also closed automatically when the MailMan object is destroyed.
Returns True for success, False for failure.
CloseSmtpConnectionAsync (1)
Creates an asynchronous task to call the CloseSmtpConnection method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteBundle
Marks multiple emails on the POP3 server for deletion. Each email in emailBundle that is still present in
the POP3 mailbox is marked for deletion.
In POP3, messages marked for deletion are not permanently removed until the session ends with the QUIT
command. If the ImmediateDelete property is , which is the default, Chilkat sends
TrueQUIT and ends the POP3 session automatically so the deletions are completed immediately. If
ImmediateDelete is , call FalsePop3EndSession when finished to send
QUIT and finalize the deletions.
When making multiple calls to Delete* methods, it is usually better to set ImmediateDelete to
, perform all deletion markings, and then call FalsePop3EndSession once.
Any method that requires communication with the POP3 server will automatically re-establish a session using the current property settings if a session is not already open.
Returns True for success, False for failure.
topDeleteBundleAsync (1)
Creates an asynchronous task to call the DeleteBundle method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteByMsgnum
Marks an email for deletion by its POP3 message number.
Important: Message numbers are specific to a single POP3 session and can change from one session to
the next. For example, if a mailbox contains ten messages, they are numbered 1 through 10.
If message 1 is deleted and a new POP3 session is opened, the remaining messages are renumbered
1 through 9.
A POP3 session must already be established before this method is called, either explicitly by calling
Pop3BeginSession or implicitly by calling another method that opens the session. This method does not
automatically begin a new session because doing so could change the message numbers and cause the application to delete
a different message than intended.
This method only marks the message for deletion. The message is not removed from the POP3 mailbox until the session is
ended by calling Pop3EndSession, which sends the QUIT command.
Returns True for success, False for failure.
topDeleteByMsgnumAsync (1)
Creates an asynchronous task to call the DeleteByMsgnum method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteByUidl
Marks an email on the POP3 server for deletion using its UIDL. UIDLs are generally preferred over POP3 message numbers because UIDLs remain stable across sessions for as long as the message remains in the mailbox.
In POP3, messages marked for deletion are not permanently removed until the session ends with the QUIT
command. If the ImmediateDelete property is , which is the default, Chilkat sends
TrueQUIT and ends the POP3 session automatically so the deletion is completed immediately. If
ImmediateDelete is , call FalsePop3EndSession when finished to send
QUIT and finalize the deletion.
When making multiple calls to Delete* methods, it is usually better to set ImmediateDelete to
, perform all deletion markings, and then call FalsePop3EndSession once.
Any method that requires communication with the POP3 server will automatically re-establish a session using the current property settings if a session is not already open.
Returns True for success, False for failure.
topDeleteByUidlAsync (1)
Creates an asynchronous task to call the DeleteByUidl method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteEmail
Marks the specified email for deletion on the POP3 server. The email object should represent a message that
was retrieved from the same POP3 mailbox and can be matched to a message still present on the server.
In POP3, messages marked for deletion are not permanently removed until the session ends with the QUIT
command. If the ImmediateDelete property is , which is the default, Chilkat sends
TrueQUIT and ends the POP3 session automatically so the deletion is completed immediately. If
ImmediateDelete is , call FalsePop3EndSession when finished to send
QUIT and finalize the deletion.
When making multiple calls to Delete* methods, it is usually better to set ImmediateDelete to
, perform all deletion markings, and then call FalsePop3EndSession once.
Any method that requires communication with the POP3 server will automatically re-establish a session using the current property settings if a session is not already open.
Returns True for success, False for failure.
topDeleteEmailAsync (1)
Creates an asynchronous task to call the DeleteEmail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteUidlSet
Marks multiple emails on the POP3 server for deletion. Each message whose UIDL matches an entry in
stUidls is marked for deletion.
In POP3, messages marked for deletion are not permanently removed until the session ends with the QUIT
command. If the ImmediateDelete property is , which is the default, Chilkat sends
TrueQUIT and ends the POP3 session automatically so the deletions are completed immediately. If
ImmediateDelete is , call FalsePop3EndSession when finished to send
QUIT and finalize the deletions.
When making multiple calls to Delete* methods, it is usually better to set ImmediateDelete to
, perform all deletion markings, and then call FalsePop3EndSession once.
Any method that requires communication with the POP3 server will automatically re-establish a session using the current property settings if a session is not already open.
Returns True for success, False for failure.
topDeleteUidlSetAsync (1)
Creates an asynchronous task to call the DeleteUidlSet method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchAll
Retrieves all emails from the POP3 mailbox and stores them in bundle.
If headersOnly is , Chilkat downloads only the message headers and the first
TruenumBodyLines lines of the message body. Attachments are not downloaded. If headersOnly is
, Chilkat downloads the complete messages, including attachments.
False
If keepOnServer is , the downloaded emails remain on the POP3 server. If
TruekeepOnServer is , the messages may be deleted from the server after full download,
depending on the POP3 deletion/session behavior.
False
Note: keepOnServer applies only when downloading full emails. Header-only downloads do not
delete messages from the server, regardless of the value of keepOnServer.
Returns True for success, False for failure.
FetchAllAsync (1)
Creates an asynchronous task to call the FetchAll method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchByUidl
Retrieves an email from the POP3 server by UIDL and stores it in email. The message is not deleted from
the server.
If headerOnly is , Chilkat downloads only the message headers and the first
TruenumBodyLines lines of the message body. Attachments are not downloaded. If headerOnly is
, Chilkat downloads the complete message, including attachments.
False
Returns True for success, False for failure.
topFetchByUidlAsync (1)
Creates an asynchronous task to call the FetchByUidl method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchFull
Downloads the full version of an email when partialEmail contains a previously retrieved header-only or
partial message. The complete message is stored in fullEmail.
This is useful when an application first downloads headers or partial bodies to display a message list, and later needs to retrieve the complete message, including attachments, for one selected email.
Returns True for success, False for failure.
topFetchFullAsync (1)
Creates an asynchronous task to call the FetchFull method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMime
Fetches an email from the POP3 server by UIDL and returns the raw MIME source bytes of the message.
Returns Nil on failure
FetchMimeAsync (1)
Creates an asynchronous task to call the FetchMime method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMimeBd
Fetches an email from the POP3 server by UIDL and stores the raw MIME source bytes in mimeData.
Returns True for success, False for failure.
FetchMimeBdAsync (1)
Creates an asynchronous task to call the FetchMimeBd method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMimeByMsgnum
Retrieves an email by POP3 message number and returns the raw MIME source bytes.
Important: Message numbers are specific to a single POP3 session and can change from one session to
the next. For example, if a mailbox contains ten messages, they are numbered 1 through 10.
If message 1 is deleted and a new POP3 session is opened, the remaining messages are renumbered
1 through 9.
A POP3 session must already be established before this method is called, either explicitly by calling
Pop3BeginSession or implicitly by calling another method that opens the session. This method does not
automatically begin a new POP3 session because doing so could change the message numbers.
Returns Nil on failure
FetchMimeByMsgnumAsync (1)
Creates an asynchronous task to call the FetchMimeByMsgnum method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMimeByMsgnumBd
Retrieves an email by POP3 message number and stores the raw MIME source bytes in bd.
Important: Message numbers are specific to a single POP3 session and can change from one session to
the next. For example, if a mailbox contains ten messages, they are numbered 1 through 10.
If message 1 is deleted and a new POP3 session is opened, the remaining messages are renumbered
1 through 9.
A POP3 session must already be established before this method is called, either explicitly by calling
Pop3BeginSession or implicitly by calling another method that opens the session. This method does not
automatically begin a new POP3 session because doing so could change the message numbers.
Returns True for success, False for failure.
topFetchMimeByMsgnumBdAsync (1)
Creates an asynchronous task to call the FetchMimeByMsgnumBd method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchOne
Retrieves a single email by POP3 message number and stores it in email. The first message in the POP3
mailbox has message number 1. Messages fetched by this method remain on the server.
If headerOnly is , Chilkat downloads only the message headers and the first
TruenumBodyLines lines of the message body. Attachments are not downloaded. If headerOnly is
, Chilkat downloads the complete message, including attachments.
False
Note: Message numbers are specific to a single POP3 session and can change from one session to the next. Use UIDLs when messages need to be identified reliably across sessions.
Returns True for success, False for failure.
topFetchOneAsync (1)
Creates an asynchronous task to call the FetchOne method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchRange
Retrieves a range of emails from the POP3 mailbox and stores them in bundle.
The range is specified by startIndex and endIndex. The first email has index 0.
The GetMailboxCount method returns the total number of messages in the POP3 mailbox.
If headersOnly is , Chilkat downloads only the message headers and the first
TruenumBodyLines lines of each message body. Attachments are not downloaded. If headersOnly is
, Chilkat downloads the complete messages, including attachments.
False
If keepOnServer is , the downloaded emails remain on the POP3 server. If
TruekeepOnServer is , the messages may be deleted from the server after full download,
depending on the POP3 deletion/session behavior.
False
Note: keepOnServer applies only when downloading full emails. Header-only downloads do not
delete messages from the server, regardless of the value of keepOnServer.
Returns True for success, False for failure.
topFetchRangeAsync (1)
Creates an asynchronous task to call the FetchRange method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchUidls
Retrieves the UIDLs of the messages currently stored in the POP3 mailbox and stores them in uidls.
A POP3 UIDL, or Unique ID Listing, is a persistent identifier assigned by the mail server to a message. Unlike POP3 message numbers, which can change between sessions, UIDLs remain consistent for as long as the message remains in the mailbox. This allows an application to track which messages have already been downloaded without relying on message numbers.
Returns True for success, False for failure.
topFetchUidlsAsync (1)
Creates an asynchronous task to call the FetchUidls method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchUidlSet
Retrieves the emails whose UIDLs are present in uidls and stores them in bundle. The downloaded
messages are not deleted from the server.
If headersOnly is , Chilkat downloads only the message headers and the first
TruenumBodyLines lines of each message body. Attachments are not downloaded. If headersOnly is
, Chilkat downloads the complete messages, including attachments.
False
Returns True for success, False for failure.
topFetchUidlSetAsync (1)
Creates an asynchronous task to call the FetchUidlSet method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetLastJsonData
Provides information about what transpired in the last method called on this object instance. For many methods, there is no information. However, for some methods, details about what occurred can be obtained by getting the LastJsonData right after the method call returns.
topGetMailboxCount
Returns the number of emails currently available in the POP3 mailbox. Returns -1 if an error occurs.
This method is functionally identical to CheckMail.
GetMailboxCountAsync (1)
Creates an asynchronous task to call the GetMailboxCount method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetMailboxInfoXml
Returns an XML document containing information about the messages currently stored in the POP3 mailbox.
The XML includes the UIDL and size, in bytes, for each message in the mailbox. This is useful for scanning mailbox state without downloading the full messages.
Returns Nil on failure
GetMailboxInfoXmlAsync (1)
Creates an asynchronous task to call the GetMailboxInfoXml method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetMailboxSize
Returns the total combined size, in bytes, of all emails currently stored in the POP3 mailbox. This is also known as the POP3 maildrop size.
Returns -1 on failure.
GetMailboxSizeAsync (1)
Creates an asynchronous task to call the GetMailboxSize method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetServerCert
Gets the digital certificate presented by the SMTP or POP3 server for the current SSL/TLS connection and stores it in
cert.
If useSmtp is , Chilkat returns the certificate for the SMTP connection. If
TrueuseSmtp is , Chilkat returns the certificate for the POP3 connection.
False
This method applies only when the current connection uses SSL/TLS.
Returns True for success, False for failure.
topGetSizeByUidl
Returns the size, in bytes, of the email on the POP3 server identified by uidl. The size includes the full
message content, including attachments.
Returns -1 if an error occurs.
GetSizeByUidlAsync (1)
Creates an asynchronous task to call the GetSizeByUidl method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
IsSmtpDsnCapable
Contacts the SMTP server and determines whether it supports the DSN, or Delivery Status Notification, extension defined by RFC 3461.
DSN support is used with properties such as DsnEnvid, DsnNotify, and DsnRet.
Returns if the SMTP server advertises DSN support, otherwise returns True.
False
IsSmtpDsnCapableAsync (1)
Creates an asynchronous task to call the IsSmtpDsnCapable method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
LoadMbxFile
Loads emails from a .mbx mailbox file and stores them in bundle.
If a filter has been configured, only the emails matching the filter are returned. Returns for
success and True for failure.
False
Returns True for success, False for failure.
topLoadTaskCaller
OpenSmtpConnection
Explicitly opens a connection to the SMTP server and authenticates if a username and password, OAuth2 token, or other applicable authentication settings have been provided.
Calling this method is optional. Email-sending methods such as SendEmail automatically open and authenticate
the SMTP connection when needed.
This method is equivalent to calling SmtpConnect followed by SmtpAuthenticate.
Returns True for success, False for failure.
OpenSmtpConnectionAsync (1)
Creates an asynchronous task to call the OpenSmtpConnection method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3Authenticate
Authenticates with the POP3 server using the current POP3 property settings, such as PopUsername,
PopPassword, and any authentication-related options.
This method should be called only after a successful call to Pop3Connect. The Pop3BeginSession
method performs both steps and is equivalent to calling Pop3Connect followed by
Pop3Authenticate.
Calling this method is optional in most applications because POP3 methods that communicate with the server automatically connect and authenticate if no authenticated session is already open.
Returns True for success, False for failure.
topPop3AuthenticateAsync (1)
Creates an asynchronous task to call the Pop3Authenticate method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3BeginSession
Explicitly begins a POP3 session by connecting to the POP3 server and authenticating using the current POP3 property settings.
Calling this method is optional. Any method that requires an established POP3 session automatically connects and logs in if a session is not already open.
Returns True for success, False for failure.
Pop3BeginSessionAsync (1)
Creates an asynchronous task to call the Pop3BeginSession method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3Connect
Explicitly connects to the POP3 server. If SSL/TLS is required by the current property settings, the secure TLS channel is established as part of this call. This method receives the server's initial greeting but does not authenticate.
After Pop3Connect succeeds, call Pop3Authenticate to log in. The Pop3BeginSession
method performs both steps and is equivalent to calling Pop3Connect followed by
Pop3Authenticate.
Calling this method is optional in most applications because POP3 methods that communicate with the server automatically
connect and authenticate if no authenticated session is already open. When finished with the POP3 server, call
Pop3EndSession or Pop3EndSessionNoQuit to disconnect.
Returns True for success, False for failure.
topPop3ConnectAsync (1)
Creates an asynchronous task to call the Pop3Connect method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3EndSession
Explicitly ends the current POP3 session. Chilkat sends the POP3 QUIT command and then closes the connection
to the POP3 server.
If ImmediateDelete is , any messages previously marked for deletion are deleted when
this method sends FalseQUIT and the POP3 session ends.
Returns True for success, False for failure.
Pop3EndSessionAsync (1)
Creates an asynchronous task to call the Pop3EndSession method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3EndSessionNoQuit
Closes the POP3 connection without sending the QUIT command.
This differs from Pop3EndSession, which sends QUIT before disconnecting. Because POP3 deletions
are normally finalized when QUIT is sent, use this method only when the application intentionally wants to
disconnect without completing the normal session-ending command sequence.
This method should always return .
True
Pop3EndSessionNoQuitAsync (1)
Creates an asynchronous task to call the Pop3EndSessionNoQuit method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3Noop
Sends a POP3 NOOP command to the server.
This can be useful for keeping a POP3 session alive or for verifying that the current POP3 connection is still open and functioning.
Returns True for success, False for failure.
topPop3NoopAsync (1)
Creates an asynchronous task to call the Pop3Noop method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3Reset
Sends a POP3 RSET command to the server.
If any messages have been marked for deletion during the current POP3 session, RSET unmarks them. This
resets the deletion state of the POP3 session to a known valid starting point.
Returns True for success, False for failure.
topPop3ResetAsync (1)
Creates an asynchronous task to call the Pop3Reset method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Pop3SendRawCommand
Sends a raw command to the POP3 server and returns the server's response.
If command contains non-US-ASCII characters, charset specifies the character set used to encode
the command before it is sent. Examples include utf-8, ansi, iso-8859-1, and
Shift_JIS.
This method is intended for advanced use, diagnostics, or issuing POP3 commands not directly exposed by higher-level MailMan methods.
Returns Nil on failure
Pop3SendRawCommandAsync (1)
Creates an asynchronous task to call the Pop3SendRawCommand method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
QuickSend
Sends a simple email to a single recipient without requiring the application to explicitly create an Email
object.
The fromAddr argument is the sender address, toAddr is the recipient address,
subject is the message subject, body is the plain-text body, and smtpServer is the
SMTP server hostname.
This method is convenient for simple cases. For attachments, HTML email, CC/BCC recipients, alternate bodies, signing,
encryption, or more control over headers and SMTP behavior, create an Email object and use
SendEmail instead.
Returns True for success, False for failure.
topQuickSendAsync (1)
Creates an asynchronous task to call the QuickSend method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
RenderToMime
Renders an Email object into the MIME text that would be sent to the SMTP server, without actually sending
the email.
When SendEmail is called, Chilkat first renders the email using the current MailMan and Email settings. This
rendering may include MIME formatting, header encoding, placeholder substitution, digital signing, encryption, and other
transformations required before transmission. RenderToMime performs that rendering step and returns the
resulting MIME text.
Conceptually, SendEmail is equivalent to calling RenderToMime followed by SendMime.
If successful, the rendered MIME string is returned.
Note: If the MIME may contain 8bit or binary content, use RenderToMimeBytes or
RenderToMimeBd instead. Returning binary MIME as a string can corrupt data that is not valid text.
Returns Nil on failure
RenderToMimeBd
Renders an Email object into MIME bytes and appends the result to renderedMime.
This method is the BinData version of RenderToMimeBytes. It is useful when the rendered MIME
must be preserved exactly as bytes, especially if the message may contain 8bit or binary MIME content.
Returns True for success, False for failure.
RenderToMimeBytes
Renders an Email object into the MIME bytes that would be sent to the SMTP server, without actually sending
the email.
This method is similar to RenderToMime, except the rendered MIME is returned as a byte array. Use this
method when the MIME may contain 8bit or binary content, or when the exact bytes must be preserved.
Returning MIME as a string can introduce errors if the message contains non-text binary data. For that reason,
RenderToMimeBytes is recommended unless it is certain that the rendered MIME is entirely safe to represent
as text.
Returns Nil on failure
RenderToMimeSb
Renders an Email object into MIME text and appends the result to renderedMime.
This method is the StringBuilder version of RenderToMime. It is useful when the application
wants to accumulate or inspect the rendered MIME text without immediately sending the email.
Note: If the MIME may contain 8bit or binary content, use RenderToMimeBytes or
RenderToMimeBd instead. Returning binary MIME as text can corrupt data that is not valid text.
Returns True for success, False for failure.
SendBundle
Sends each email in bundle. This is equivalent to calling SendEmail once for each email in the
bundle.
If an error occurs while sending one email, Chilkat continues attempting to send the remaining emails unless a fatal error occurs that requires the send operation to stop.
Because it can be difficult or impossible to programmatically determine exactly which emails succeeded and which failed
after a bundle send, applications that need detailed per-message status should loop through the bundle and call
SendEmail for each message individually.
Returns True for success, False for failure.
topSendBundleAsync (1)
Creates an asynchronous task to call the SendBundle method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SendEmail
Sends a single email through the configured SMTP server.
Chilkat automatically opens the SMTP connection when needed. After the email is sent, the connection remains open so a
subsequent call to SendEmail or another email-sending method can reuse the same SMTP connection. If an
SMTP-related property changes, such as SmtpHost, SmtpUsername, password, port, or SSL/TLS
settings, Chilkat automatically closes the existing connection and establishes a new one using the updated settings on
the next send.
Important: Some SMTP servers do not complete final delivery processing until the SMTP connection is
closed. In these cases, call CloseSmtpConnection after sending. Most SMTP servers process the message
immediately, so explicitly closing the connection is usually not required.
After sending, additional information about the SMTP transaction may be available by calling
GetLastJsonData.
This method returns if the final SMTP status code in the SMTP session is in the 200 or 300 range.
Returns True for failure.
False
Returns True for success, False for failure.
SendEmailAsync (1)
Creates an asynchronous task to call the SendEmail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SendMime
Sends an email from caller-supplied MIME text. The MIME source in mimeSource is passed to the SMTP server
as the message content.
This method provides complete control over the MIME that is sent. It is useful when the application already has a fully
formed MIME message, or when the MIME was created externally and should not be rebuilt from an Email object.
The fromAddr argument is the SMTP reverse-path address used in the MAIL FROM command. This is
where bounced email and non-delivery reports are normally delivered. It can be different from the From
header in the MIME.
The recipients argument is a comma-separated list of recipient email addresses used in SMTP
RCPT TO commands. These are usually the same addresses found in the MIME To, Cc,
and Bcc headers, but they do not have to be the same unless the SMTP server enforces such a policy.
This method returns if the final SMTP status code in the SMTP session is in the 200 or 300 range.
Returns True for failure.
False
Returns True for success, False for failure.
SendMimeAsync (1)
Creates an asynchronous task to call the SendMime method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SendMimeBd
Sends an email from caller-supplied MIME bytes contained in mimeData.
This method is the BinData version of SendMimeBytes. It is useful when the MIME must be sent
exactly as bytes, such as when it contains binary MIME content, 8bit encodings, or a DKIM/DomainKey signature where byte
preservation matters.
The fromAddr argument is the SMTP reverse-path address used in the MAIL FROM command. The
recipients argument is a comma-separated list of recipient addresses used in SMTP RCPT TO
commands.
This method returns if the final SMTP status code in the SMTP session is in the 200 or 300 range.
Returns True for failure.
False
Returns True for success, False for failure.
SendMimeBdAsync (1)
Creates an asynchronous task to call the SendMimeBd method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SendMimeBytes
Sends an email from caller-supplied MIME bytes.
This method is similar to SendMime, except the MIME is supplied as a byte array. Use this method when the
MIME contains binary data, 8bit content, or a DKIM/DomainKey signature where preserving the exact bytes is important.
The fromAddr argument is the SMTP reverse-path address used in the MAIL FROM command. This is
where bounced email and non-delivery reports are normally delivered. It can be different from the From
header in the MIME.
The recipients argument is a comma-separated list of recipient email addresses used in SMTP
RCPT TO commands. These are usually the same addresses found in the MIME To, Cc,
and Bcc headers, but they do not have to be the same unless the SMTP server enforces such a policy.
This method returns if the final SMTP status code in the SMTP session is in the 200 or 300 range.
Returns True for failure.
False
Returns True for success, False for failure.
SendMimeBytesAsync (1)
Creates an asynchronous task to call the SendMimeBytes method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SendMimeToList
Sends caller-supplied MIME text to a distribution list read from a text file.
This method is similar to SendMime, except the recipient list is read from distListFilename.
The distribution list file should contain one email address per line.
The fromAddr argument is the SMTP reverse-path address used in the MAIL FROM command. The MIME
text in mimeSource is used as the message content.
Returns True for success, False for failure.
topSendMimeToListAsync (1)
Creates an asynchronous task to call the SendMimeToList method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SetDecryptCert
Explicitly specifies the certificate to use when decrypting encrypted email.
The certificate must correspond to the recipient certificate used to encrypt the message, and the associated private key must be available to Chilkat through the certificate itself, an added PFX source, an XML certificate vault, or the platform certificate store where applicable.
Returns True for success, False for failure.
topSetDecryptCert2
Explicitly specifies both the certificate and its associated private key to use when decrypting S/MIME encrypted email.
In most cases, it is simpler to call AddPfxSourceFile or AddPfxSourceData to provide the
certificate and private key together in a PFX/PKCS#12 source. On Windows, if the certificate and private key are already
installed in the default certificate store, no explicit setup may be needed because MailMan automatically searches the
Windows certificate stores.
Returns True for success, False for failure.
topSetPassword
Sets the POP3 or SMTP password from a SecureString.
The protocol argument specifies which password is being set. Use pop3 to set the POP3 password,
which is equivalent to setting the PopPassword property. Use smtp to set the SMTP password,
which is equivalent to setting the SmtpPassword property.
Returns True for success, False for failure.
SetSslClientCert
Sets the client-side certificate to use for SSL/TLS connections.
This is typically not required. Most SSL/TLS connections authenticate the server only, while the client remains unauthenticated at the TLS layer. Use this method only when the SMTP or POP3 server requires TLS client certificate authentication.
Returns True for success, False for failure.
topSetSslClientCertPem
Sets the client-side certificate to use for SSL/TLS connections, loading it from PEM data or from a PEM file.
The pemDataOrFilename argument may contain PEM text or the path to a PEM file. The
pemPassword argument supplies the password if the PEM private key is encrypted.
TLS client certificates are typically required only when the server uses mutual TLS. Most SMTP and POP3 SSL/TLS connections do not require a client certificate.
Returns True for success, False for failure.
SetSslClientCertPfx
Sets the client-side certificate to use for SSL/TLS connections, loading it from a PFX/PKCS#12 file.
The pfxPath argument is the path to the PFX file, and pfxPassword is the password required
to open it.
TLS client certificates are typically required only when the server uses mutual TLS. Most SMTP and POP3 SSL/TLS connections do not require a client certificate.
Returns True for success, False for failure.
topSmtpAuthenticate
Authenticates with the SMTP server using the current SMTP property settings, such as SmtpUsername,
SmtpPassword, OAuth2 token settings, and other authentication-related options.
This method should be called only after a successful call to SmtpConnect. The
OpenSmtpConnection method performs both steps and is equivalent to calling SmtpConnect
followed by SmtpAuthenticate.
Calling this method is optional in most applications because SMTP methods that communicate with the server, such as
SendEmail, automatically connect and authenticate if no authenticated SMTP connection is already open.
Returns True for success, False for failure.
SmtpAuthenticateAsync (1)
Creates an asynchronous task to call the SmtpAuthenticate method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SmtpConnect
Explicitly connects to the SMTP server. If SSL/TLS is required by the current property settings, the secure TLS channel is established as part of this call. This method receives the server's initial greeting but does not authenticate.
After SmtpConnect succeeds, call SmtpAuthenticate to authenticate. The
OpenSmtpConnection method performs both steps and is equivalent to calling SmtpConnect
followed by SmtpAuthenticate.
Calling this method is optional in most applications because SMTP methods that communicate with the server, such as
SendEmail, automatically connect and authenticate if no authenticated SMTP connection is already open.
Returns True for success, False for failure.
SmtpConnectAsync (1)
Creates an asynchronous task to call the SmtpConnect method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SmtpNoop
Sends an SMTP NOOP command to the server.
This can be useful for testing whether the SMTP connection is working and still valid. If an SMTP connection is not
already open, SmtpNoop automatically establishes the connection using the current SMTP property settings.
Returns True for success, False for failure.
topSmtpNoopAsync (1)
Creates an asynchronous task to call the SmtpNoop method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SmtpReset
Sends an SMTP RSET command to the server.
The RSET command resets the server-side state of the current SMTP transaction so the connection can be used
to begin a new mail transaction. This method is rarely needed. It would normally only be useful if a mail-sending method
failed and left the SMTP connection open in a non-initial state, a situation that should generally not occur with the
Chilkat MailMan object.
Returns True for success, False for failure.
topSmtpResetAsync (1)
Creates an asynchronous task to call the SmtpReset method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SmtpSendRawCommand
Sends a raw command to the SMTP server and returns the server's response.
If command contains non-US-ASCII characters, charset specifies the character set used to encode
the command before it is sent. Examples include utf-8, ansi, iso-8859-1, and
Shift_JIS.
If bEncodeBase64 is , the response is returned in Base64-encoded form. If
TruebEncodeBase64 is , the raw response text is returned.
False
This method is intended for advanced use, diagnostics, or issuing SMTP commands not directly exposed by higher-level MailMan methods.
Returns Nil on failure
SmtpSendRawCommandAsync (1)
Creates an asynchronous task to call the SmtpSendRawCommand method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SshAuthenticatePk
Authenticates with the SSH server using public-key authentication after an SSH tunnel has been opened.
The sshLogin argument is the SSH account name. The sshUsername argument, despite its name in
this signature, is the SshKey containing the private key used for authentication. The matching public key
must already be installed for the SSH account on the server.
An SSH tunneling session begins by calling SshOpenTunnel to connect to the SSH server, followed by either
SshAuthenticatePk or SshAuthenticatePw to authenticate.
After the SSH tunnel is established and authenticated, MailMan's underlying SMTP or POP3 communication uses the SSH tunnel. No other programming changes are required beyond the initial tunnel setup calls.
Returns True for success, False for failure.
topSshAuthenticatePkAsync (1)
Creates an asynchronous task to call the SshAuthenticatePk method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SshAuthenticatePw
Authenticates with the SSH server using an SSH username and password after an SSH tunnel has been opened.
The sshLogin argument is the SSH account name, and sshPassword is the corresponding SSH
password.
An SSH tunneling session begins by calling SshOpenTunnel to connect to the SSH server, followed by either
SshAuthenticatePw or SshAuthenticatePk to authenticate.
After the SSH tunnel is established and authenticated, MailMan's underlying SMTP or POP3 communication uses the SSH tunnel. No other programming changes are required beyond the initial tunnel setup calls.
Returns True for success, False for failure.
SshAuthenticatePwAsync (1)
Creates an asynchronous task to call the SshAuthenticatePw method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SshCloseTunnel
Closes the SSH tunnel used for SMTP or POP3 communication.
Returns True for success, False for failure.
topSshCloseTunnelAsync (1)
Creates an asynchronous task to call the SshCloseTunnel method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
SshOpenTunnel
Connects to an SSH server and opens an SSH tunnel for MailMan's SMTP or POP3 connections.
The sshHostname argument is the hostname or IP address of the SSH server. The sshPort argument
is the SSH port, typically 22.
An SSH tunneling session begins by calling SshOpenTunnel, followed by either
SshAuthenticatePw or SshAuthenticatePk to authenticate.
After the SSH tunnel is established and authenticated, MailMan's underlying SMTP or POP3 communication uses the SSH tunnel. No other programming changes are required beyond the initial tunnel setup calls.
Returns True for success, False for failure.
SshOpenTunnelAsync (1)
Creates an asynchronous task to call the SshOpenTunnel method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
UseCertVault
Provides an XML certificate vault to be searched for certificates and private keys when MailMan performs operations such as encryption, decryption, signing, or signature verification.
Unlike PFX sources added with AddPfxSourceData, AddPfxSourceBd, or
AddPfxSourceFile, only one XML certificate vault can be used at a time. If UseCertVault is
called more than once, the most recent vault replaces the previously supplied vault.
Returns True for success, False for failure.
topUseSsh
Configures MailMan to use an existing SSH tunnel provided by an Ssh object for SMTP and POP3 connections.
This method is similar to UseSshTunnel, except the SSH tunnel is supplied by an Ssh object
rather than a Socket object.
Sharing an existing SSH tunnel is useful when multiple objects need to communicate through the same SSH connection. SSH supports multiple logical channels within one tunnel, so SMTP and POP3 connections can exist simultaneously as separate SSH channels.
Returns True for success, False for failure.
UseSshTunnel
Configures MailMan to use an existing SSH tunnel provided by a Socket object for SMTP and POP3 connections.
Sharing an existing SSH tunnel is useful when multiple objects need to communicate through the same SSH connection. SSH supports multiple logical channels within one tunnel, so SMTP and POP3 connections can exist simultaneously as separate SSH channels.
Returns True for success, False for failure.
topVerifyPopConnection
Tests whether a TCP/IP connection can be established with the configured POP3 server.
This method verifies connectivity only. It does not prove that POP3 authentication will succeed. Use
VerifyPopLogin to test both connection and login.
Returns if the connection can be established, otherwise returns True.
False
VerifyPopConnectionAsync (1)
Creates an asynchronous task to call the VerifyPopConnection method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
VerifyPopLogin
Tests whether Chilkat can connect to the configured POP3 server and successfully log in using the current POP3 authentication settings.
Use this method to diagnose whether POP3 credentials and authentication settings are correct. If only the TCP/IP
connection needs to be tested, use VerifyPopConnection.
Returns if the connection and login succeed, otherwise returns True.
False
VerifyPopLoginAsync (1)
Creates an asynchronous task to call the VerifyPopLogin method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
VerifyRecips
Initiates sending an email, but aborts just after passing all recipients (TO, CC, BCC) to the SMTP server. This allows your program to collect email addresses flagged as invalid by the SMTP server.
Important: Please read this blog post before using this method: http://www.cknotes.com/?p=249>http://www.cknotes.com/?p=249
Returns True for success, False for failure.
VerifyRecipsAsync (1)
Creates an asynchronous task to call the VerifyRecips method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
VerifySmtpConnection
Return True if a TCP/IP connection can be established with the SMTP server, otherwise returns False.
VerifySmtpConnectionAsync (1)
Creates an asynchronous task to call the VerifySmtpConnection method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
VerifySmtpLogin
Return True if a TCP/IP connection and login is successful with the SMTP server. Otherwise returns False.
VerifySmtpLoginAsync (1)
Creates an asynchronous task to call the VerifySmtpLogin method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
Events
To implement events, your application would define and implement a class that is a subclass of Chilkat.MailMan. Your custom class would implement (i.e. override) some or all of the event methods.
For example:
class MyMailMan
Inherits Chilkat.MailMan
Function AbortCheck() As Boolean
Function PercentDone(pctDone As Int32) As Boolean
Sub ProgressInfo(name As String, value As String)
Sub TaskCompleted(task As Chilkat.Task)
End ClassAbortCheck
Enables a method call to be aborted by triggering the AbortCheck event at intervals defined by the HeartbeatMs property. If HeartbeatMs is set to its default value of 0, no events will occur. For instance, set HeartbeatMs to 200 to trigger 5 AbortCheck events per second.
PercentDone
This provides the percentage completion for any method involving network communications or time-consuming processing, assuming the progress can be measured as a percentage. This event is triggered only when it's possible and logical to express the operation's progress as a percentage. The pctDone argument will range from 1 to 100. For methods that finish quickly, the number of PercentDone callbacks may vary, but the final callback will have pctDone equal to 100. For longer operations, callbacks will not exceed one per percentage point (e.g., 1, 2, 3, ..., 98, 99, 100).
The PercentDone callback also acts as an AbortCheck event. For fast methods where PercentDone fires, an AbortCheck event may not trigger since the PercentDone callback already provides an opportunity to abort. For longer operations, where time between PercentDone callbacks is extended, AbortCheck callbacks enable more responsive operation termination.
To abort the operation, set the abort output argument to True. This will cause the method to terminate and return a failure status or corresponding failure value.
ProgressInfo
This event callback provides tag name/value pairs that detail what occurs during a method call. To discover existing tag names, create code to handle the event, emit the pairs, and review them. Most tag names are self-explanatory.
TaskCompleted
Called from the background thread when an asynchronous task completes.
Deprecated
CopyMail
This method is deprecated. Applications should instead call FetchAll.
Copy the email from a POP3 server into a EmailBundle. This does not remove the email from the POP3 server.
Returns Nil on failure
CopyMailAsync (1) (2)
Creates an asynchronous task to call the CopyMail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
DeleteMultiple
Marks multiple emails on the POP3 server for deletion. (Any email on the server having a UIDL equal to a UIDL found in uidlArray is marked for deletion.) To complete the deletion of the emails, a QUIT message must be sent and the POP3 session ended. This will happen automatically when the ImmediateDelete property equals True, which is the default. If ImmediateDelete equals False, then the Pop3EndSession method can be called to send the QUIT and end the session (i.e. disconnect.)
Note: When making multiple calls to a Delete* method, it's best to turn off ImmediateDelete, and then manually call Pop3EndSession to finalize the deletions.
Also, any method call requiring communication with the POP3 server will automatically re-establish a session based on the current property settings.
Returns True for success, False for failure.
DeleteMultipleAsync (1)
Creates an asynchronous task to call the DeleteMultiple method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchByMsgnum
This method is deprecated. Applications should instead call FetchOne.
Fetches an email by message number. WARNING: Be very careful if calling this method. Message numbers are specific to a POP3 session. If a maildrop has (for example) 10 messages, the message numbers will be 1, 2, 3, ... 10. If message number 1 is deleted and a new POP3 session is established, there will be 9 messages numbered 1, 2, 3, ... 9.
IMPORTANT: A POP3 connection must first be established by either calling Pop3BeginSession explicitly, or implicitly by calling some other method that automatically establishes the session. This method will not automatically establish a new POP3 session (because if it did, the message numbers would potentially be different than what the application expects).
Returns Nil on failure
FetchByMsgnumAsync (1) (2)
Creates an asynchronous task to call the FetchByMsgnum method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchEmail
This method is deprecated. Applications should instead call FetchByUidl.
Fetches an email from the POP3 mail server given its UIDL. Calling this method does not remove the email from the server. A typical program might get the email headers from the POP3 server by calling GetAllHeaders or GetHeaders, and then fetch individual emails by UIDL.
Returns a null reference on failure.
Returns Nil on failure
FetchEmailAsync (1) (2)
Creates an asynchronous task to call the FetchEmail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMultiple
This method is deprecated. Applications should instead call FetchUidlSet.
Given an array of UIDL strings, fetchs all the emails from the POP3 server whose UIDL is present in the array, and returns the emails in a bundle.
Returns Nil on failure
FetchMultipleAsync (1) (2)
Creates an asynchronous task to call the FetchMultiple method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMultipleHeaders
This method is deprecated. Applications should instead call FetchUidlSet.
Given an array of UIDL strings, fetchs all the email headers from the POP3 server whose UIDL is present in the array.
Note: The email objects returned in the bundle contain only headers. The attachments will be missing, and the bodies will be mostly missing (only the 1st numBodyLines lines of either the plain-text or HTML body will be present).
Returns Nil on failure
FetchMultipleHeadersAsync (1) (2)
Creates an asynchronous task to call the FetchMultipleHeaders method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchMultipleMime
This deprecated method will be removed in a future major release of Chilkat. MIME can potentially include non-encoded binary data and mixed character encodings, so downloading emails as a simple MIME string often requires processing and modifications, making it impractical. Instead, applications should use FetchMimeBd or methods that download emails to email objects.
This method downloads emails from the POP3 server for each UIDL in uidlArray and returns an object containing the collection of downloaded MIME strings.
Returns Nil on failure
FetchMultipleMimeAsync (1) (2)
Creates an asynchronous task to call the FetchMultipleMime method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchSingleHeader
This method is deprecated. Applications should instead call FetchOne.
Fetches a single header by message number. Returns an email object on success, or a null reference on failure.
Returns Nil on failure
FetchSingleHeaderAsync (1) (2)
Creates an asynchronous task to call the FetchSingleHeader method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
FetchSingleHeaderByUidl
This method is deprecated. Applications should instead call FetchByUidl.
Fetches a single header by UIDL. Returns an email object on success, or a null reference on failure.
Note: The email objects returned in the bundle contain only headers. The attachments will be missing, and the bodies will be mostly missing (only the 1st uidl lines of either the plain-text or HTML body will be present).
Returns Nil on failure
FetchSingleHeaderByUidlAsync (1) (2)
Creates an asynchronous task to call the FetchSingleHeaderByUidl method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetAllHeaders
This method is deprecated. Applications should instead call FetchAll.
Retrieves all emails from the POP3 server, limiting the body to the first numBodyLines lines and excluding attachments. The returned emails are valid objects with truncated bodies and no attachments.
Returns Nil on failure
GetAllHeadersAsync (1) (2)
Creates an asynchronous task to call the GetAllHeaders method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetFullEmail
This method is deprecated. Applications should instead call FetchFull.
If a partial email (header-only) is retrieved using GetHeaders or GetAllHeaders, this method will download and return the full email from the server using the partial email as an argument.
Returns Nil on failure
GetFullEmailAsync (1) (2)
Creates an asynchronous task to call the GetFullEmail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetHeaders
This method is deprecated. Applications should instead call FetchRange.
The same as the GetAllHeaders method, except only the emails from fromIndex to toIndex on the POP3 server are returned. The first email on the server is at index 0.
Returns Nil on failure
GetHeadersAsync (1) (2)
Creates an asynchronous task to call the GetHeaders method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
GetPop3SslServerCert
This method is deprecated. Applications should instead call GetServerCert.
Returns the POP3 server's SSL certificate. This is available after connecting via SSL to a POP3 server. (To use POP3 SSL, set the PopSsl property = True.)
Returns a null reference if no POP3 SSL certificate is available.
Returns Nil on failure
GetSmtpSslServerCert
This method is deprecated. Applications should instead call GetServerCert.
If using SSL/TLS, this method returns the SMTP server's digital certificate used with the secure connection.
Returns Nil on failure
GetUidls
This method is deprecated. Applications should instead call FetchUidls.
Returns the UIDLs of the emails currently stored on the POP3 server.
Returns Nil on failure
GetUidlsAsync (1) (2)
Creates an asynchronous task to call the GetUidls method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
LastJsonData
This method is deprecated. Call GetLastJsonData instead.
Provides information about what transpired in the last method called on this object instance. For many methods, there is no information. However, for some methods, details about what occurred can be obtained by getting the LastJsonData right after the method call returns.
Returns Nil on failure
LoadEml
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email object's LoadEml method.
Loads a .eml file containing an email.
Returns Nil on failure
LoadMbx
This method is deprecated. Applications should instead call LoadMbxFile.
Loads a .mbx file containing emails and returns an email bundle. If a Filter is present, only emails matching the filter are returned.
Returns Nil on failure
LoadMime
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email object's SetFromMimeText method.
Creates and loads an email from a MIME string. Returns a null reference on failure.
Returns Nil on failure
LoadXmlEmail
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email object's SetFromXmlText method.
Loads an XML file containing a single email and returns an email object. Returns a null reference on failure.
Returns Nil on failure
LoadXmlEmailString
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email object's SetFromXmlText method.
Loads an XML string containing a single email and returns an email object. Returns a null reference on failure.
Returns Nil on failure
LoadXmlFile
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email bundle object's LoadXml method.
Loads an XML file containing one or more emails and returns an email bundle. If a Filter is present, only emails matching the filter are returned. Returns a null reference on failure.
Returns Nil on failure
LoadXmlString
This deprecated method will be removed in a future Chilkat major version. Applications should instead call the email bundle object's LoadXmlString method.
Loads from an XML string containing emails and returns an email bundle. If a Filter is present, only emails matching the filter are returned.
Returns Nil on failure
MxLookup
This deprecated method will be removed in a future Chilkat major version. Applications should instead use the Chilkat Dns class to do MX lookups.
Performs a DNS MX lookup to return the mail server hostname based on an email address.
Returns Nil on failure
MxLookupAll
This deprecated method will be removed in a future Chilkat major version. Applications should instead use the Chilkat Dns class to do MX lookups.
Performs a DNS MX lookup to return the list of mail server hostnames based on an email address. The primary server is at index 0. In most cases, there is only one mail server for a given email address.
Returns Nil on failure
TransferMail
This method is deprecated. Applications should instead call FetchAll.
Downloads and removes all email from a POP3 server. A bundle containing the emails is returned. A null reference is returned on failure.
Returns Nil on failure
TransferMailAsync (1) (2)
Creates an asynchronous task to call the TransferMail method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure
TransferMultipleMime
This deprecated method will be removed in a future major release of Chilkat. MIME can potentially include non-encoded binary data and mixed character encodings, so downloading emails as a simple MIME string often requires processing and modifications, making it impractical. Instead, applications should use FetchMimeBd or methods that download emails to email objects.
Same as FetchMultipleMime except that the downloaded emails are also deleted from the server. Returns a null reference on failure.
Returns Nil on failure
TransferMultipleMimeAsync (1) (2)
Creates an asynchronous task to call the TransferMultipleMime method with the arguments provided.
Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.
Returns Nil on failure