MailItem.SenderEmailType Property (Outlook)
Published: July 16, 2012
Returns a String that represents the type of entry for the e-mail address of the sender of the Outlook item, such as 'SMTP' for Internet address, 'EX' for a Microsoft Exchange server address, etc. Read-only.
The following Microsoft Visual Basic for Applications (VBA) example demonstrates how to use the SenderEmailType property. To run this example without errors, an e-mail item should be open in the active inspector window.
Sub SenderEmailTypeExample() Dim mail As Outlook.MailItem Set mail = Application.ActiveInspector.CurrentItem MsgBox mail.SenderEmailType If mail.SenderEmailType = "SMTP" Then MsgBox "Message from Internet e-mail user." Else If mail.SenderEmailType = "EX" Then MsgBox "Message from internal Exchange user." End If End If End Sub