MailMessage Object (Word)
Represents the active e-mail message if you are using Microsoft Word as your e-mail editor.
Remarks
Use the MailMessage property to return the MailMessage object. The following example validates the e-mail addresses that appear in the active e-mail message.
Application.MailMessage.CheckName
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 is not true, an error occurs.