Use this page to enter additional file types. The file type you enter is used to filter the types of documents displayed on the Select Item page when users select a document they want to insert from Outlook.
NOTE The file type you enter needs to match the MIME type of the document as displayed in the system properties of the document. Check the MIME type system property of the documents before entering file types in the Outlook preferences to ensure the correct MIME type is used and the filtering works as intended.
To add an Outlook file type