MailItem.GetMimeReadStream method
When overridden in a derived class, the GetMimeReadStream method gets a readable stream that contains the Multipurpose Internet Mail Extensions (MIME) content for the derived class.
Assembly: Microsoft.Exchange.Data.Transport (in Microsoft.Exchange.Data.Transport.dll)
Return value
Type: System.IO.StreamWhen overridden in a derived class, the GetMimeReadStream method returns a read-only stream.