_MobileItem.MobileFormat Property
Office 2010
Returns an OlMobileFormat constant that represents the message format of a mobile message. Read-only.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
The mobile format of a MobileItem object can be either text or multimedia. A text message has the value olSMS as the MobileFormat, and a multimedia message has the value olMMS.