SmtpClient.SendMailAsync Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Sends the specified message to an SMTP server for delivery as an asynchronous operation.
Overloads
| SendMailAsync(MailMessage) |
Sends the specified message to an SMTP server for delivery as an asynchronous operation. |
| SendMailAsync(MailMessage, CancellationToken) |
Sends the specified message to an SMTP server for delivery as an asynchronous operation. |
| SendMailAsync(String, String, String, String) |
Sends the specified message to an SMTP server for delivery as an asynchronous operation. The message sender, recipients, subject, and message body are specified using String objects. |
| SendMailAsync(String, String, String, String, CancellationToken) |
Sends the specified message to an SMTP server for delivery as an asynchronous operation, using the specified sender, recipients, subject, and body strings. |
SendMailAsync(MailMessage)
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
Sends the specified message to an SMTP server for delivery as an asynchronous operation.
public:
System::Threading::Tasks::Task ^ SendMailAsync(System::Net::Mail::MailMessage ^ message);public System.Threading.Tasks.Task SendMailAsync (System.Net.Mail.MailMessage message);member this.SendMailAsync : System.Net.Mail.MailMessage -> System.Threading.Tasks.TaskPublic Function SendMailAsync (message As MailMessage) As TaskParameters
- message
- MailMessage
A MailMessage that contains the message to send.
Returns
The task object representing the asynchronous operation.
Exceptions
message is null.
This SmtpClient has another send operation already in progress.
-or-
There are no recipients specified in To, CC, and Bcc properties.
-or-
DeliveryMethod property is set to Network and Host is null.
-or-
DeliveryMethod property is set to Network and Host is equal to the empty string ("").
-or-
DeliveryMethod property is set to Network and Port is zero, a negative number, or greater than 65,535.
This object has been disposed.
The connection to the SMTP server failed.
-or-
Authentication failed.
-or-
The operation timed out.
-or-
EnableSsl is set to true but the DeliveryMethod property is set to SpecifiedPickupDirectory or PickupDirectoryFromIis.
-or-
EnableSsl is set to true, but the SMTP mail server did not advertise STARTTLS in the response to the EHLO command.
-or-
The message could not be delivered to one or more of the recipients in To, CC, or Bcc.
Remarks
This operation will not block. The returned Task object will complete once the message has been sent.
Applies to
SendMailAsync(MailMessage, CancellationToken)
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
Sends the specified message to an SMTP server for delivery as an asynchronous operation.
public:
System::Threading::Tasks::Task ^ SendMailAsync(System::Net::Mail::MailMessage ^ message, System::Threading::CancellationToken cancellationToken);public System.Threading.Tasks.Task SendMailAsync (System.Net.Mail.MailMessage message, System.Threading.CancellationToken cancellationToken);member this.SendMailAsync : System.Net.Mail.MailMessage * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Function SendMailAsync (message As MailMessage, cancellationToken As CancellationToken) As TaskParameters
- message
- MailMessage
The message to send.
- cancellationToken
- CancellationToken
The cancellation token to cancel the operation.
Returns
The task object representing the asynchronous operation.
Exceptions
message is null.
This SmtpClient has another send operation already in progress.
-or-
From is null.
-or-
There are no recipients specified in To, CC, and Bcc properties.
-or-
DeliveryMethod property is set to Network and Host is null.
-or-
DeliveryMethod property is set to Network and Host is equal to the empty string ("").
-or-
DeliveryMethod property is set to Network and Port is zero, a negative number, or greater than 65,535.
This object has been disposed.
The connection to the SMTP server failed.
-or-
Authentication failed.
-or-
The operation timed out.
-or-
EnableSsl is set to true but the DeliveryMethod property is set to SpecifiedPickupDirectory or PickupDirectoryFromIis.
-or-
EnableSsl is set to true, but the SMTP mail server did not advertise STARTTLS in the response to the EHLO command.
-or-
The message could not be delivered to one or more of the recipients in To, CC, or Bcc.
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
This operation will not block. The returned Task object will complete once the message has been sent.
Applies to
SendMailAsync(String, String, String, String)
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
Sends the specified message to an SMTP server for delivery as an asynchronous operation. The message sender, recipients, subject, and message body are specified using String objects.
public:
System::Threading::Tasks::Task ^ SendMailAsync(System::String ^ from, System::String ^ recipients, System::String ^ subject, System::String ^ body);public System.Threading.Tasks.Task SendMailAsync (string from, string recipients, string? subject, string? body);public System.Threading.Tasks.Task SendMailAsync (string from, string recipients, string subject, string body);member this.SendMailAsync : string * string * string * string -> System.Threading.Tasks.TaskPublic Function SendMailAsync (from As String, recipients As String, subject As String, body As String) As TaskParameters
Returns
The task object representing the asynchronous operation.
Exceptions
This SmtpClient has another send operation already in progress.
-or-
From is null.
-or-
DeliveryMethod property is set to Network and Host is null.
-or-
DeliveryMethod property is set to Network and Host is equal to the empty string ("").
-or-
DeliveryMethod property is set to Network and Port is zero, a negative number, or greater than 65,535.
This object has been disposed.
The connection to the SMTP server failed.
-or-
Authentication failed.
-or-
The operation timed out.
-or-
EnableSsl is set to true but the DeliveryMethod property is set to SpecifiedPickupDirectory or PickupDirectoryFromIis.
-or-
EnableSsl is set to true, but the SMTP mail server did not advertise STARTTLS in the response to the EHLO command.
-or-
The message could not be delivered to one or more of the recipients in To, CC, or Bcc.
Remarks
This operation will not block. The returned Task object will complete once the message has been sent.
Applies to
SendMailAsync(String, String, String, String, CancellationToken)
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
- Source:
- SmtpClient.cs
Sends the specified message to an SMTP server for delivery as an asynchronous operation, using the specified sender, recipients, subject, and body strings.
public:
System::Threading::Tasks::Task ^ SendMailAsync(System::String ^ from, System::String ^ recipients, System::String ^ subject, System::String ^ body, System::Threading::CancellationToken cancellationToken);public System.Threading.Tasks.Task SendMailAsync (string from, string recipients, string? subject, string? body, System.Threading.CancellationToken cancellationToken);member this.SendMailAsync : string * string * string * string * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Function SendMailAsync (from As String, recipients As String, subject As String, body As String, cancellationToken As CancellationToken) As TaskParameters
- from
- String
The address information of the message sender.
- recipients
- String
The addresses that the message is sent to.
- subject
- String
The subject line for the message.
- body
- String
The message body.
- cancellationToken
- CancellationToken
The cancellation token to cancel the operation.
Returns
The task object representing the asynchronous operation.
Exceptions
This SmtpClient has another send operation already in progress.
-or-
DeliveryMethod property is set to Network and Host is null.
-or-
DeliveryMethod property is set to Network and Host is equal to the empty string ("").
-or-
DeliveryMethod property is set to Network and Port is zero, a negative number, or greater than 65,535.
This object has been disposed.
The connection to the SMTP server failed.
-or-
Authentication failed.
-or-
The operation timed out.
-or-
EnableSsl is set to true but the DeliveryMethod property is set to SpecifiedPickupDirectory or PickupDirectoryFromIis.
-or-
EnableSsl is set to true, but the SMTP mail server did not advertise STARTTLS in the response to the EHLO command.
-or-
The message could not be delivered to one or more of the recipients in To, CC, or Bcc.
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
This operation will not block. The returned Task object will complete once the message has been sent.
Applies to
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