Call the MailMessage.Dispose method when you are finished using the System.Net.Mail.MailMessage. The MailMessage.Dispose method leaves the System.Net.Mail.MailMessage in an unusable state. After calling MailMessage.Dispose, you must release all references to the System.Net.Mail.MailMessage so the garbage collector can reclaim the memory that the System.Net.Mail.MailMessage was occupying. For more information, see Cleaning Up Unmanaged Resources and Implementing a Dispose Method.

Namespace: System.Net.Mail
Assembly: System (in System.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0
Since: .NET 2.0