Why can't I save an email message as an Outlook message to M-Files?
If you are an M-Files system administrator, you must enable saving attachments in Outlook format and install Microsoft Exchange Server or a 32-bit MAPI client on the M-Files server computer that hosts the vault. For more information, see Mail Sources.
If you are a vault user, inform your M-Files system administrator about this issue and refer the administrator to this page.