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MimeKit

MailTransportSendAsync(MimeMessage, CancellationToken, ITransferProgress) Method

Asynchronously send the specified message.

Namespace: MailKit
Assembly: MailKit (in MailKit.dll) Version: 4.3.0
Syntax
C#
Copy
public virtual Task<string> SendAsync(
	MimeMessage message,
	CancellationToken cancellationToken = default,
	ITransferProgress progress = null
)

Parameters

message  MimeMessage
The message.
cancellationToken  CancellationToken  (Optional)
The cancellation token.
progress  ITransferProgress  (Optional)
The progress reporting mechanism.

Return Value

TaskString
The final free-form text response from the server.

Implements

IMailTransportSendAsync(MimeMessage, CancellationToken, ITransferProgress)
Exceptions
ExceptionCondition
ArgumentNullExceptionmessage is null.
ObjectDisposedException The MailTransport has been disposed.
ServiceNotConnectedException The MailTransport is not connected.
ServiceNotAuthenticatedException Authentication is required before sending a message.
InvalidOperationException

A sender has not been specified.

-or-

No recipients have been specified.

OperationCanceledException The operation has been canceled.
IOException An I/O error occurred.
CommandException The send command failed.
ProtocolException A protocol exception occurred.
Remarks

Asynchronously sends the specified message.

The sender address is determined by checking the following message headers (in order of precedence): Resent-Sender, Resent-From, Sender, and From.

If either the Resent-Sender or Resent-From addresses are present, the recipients are collected from the Resent-To, Resent-Cc, and Resent-Bcc headers, otherwise the To, Cc, and Bcc headers are used.

See Also