Represents the active email message if you are using Microsoft Word as your e-mail editor.
Assembly: Microsoft.Office.Interop.Word (in Microsoft.Office.Interop.Word.dll)
Use the MailMessage property to return the MailMessage object.
The methods of the MailMessage object require that you are using Word as your e-mail editor and that an e-mail message is active. If either of these conditions isn't true, an error occurs.