MS-TNEF (Microsoft Transport Neutral Encapsulation Format) File Type. MS-TNEF files usually have the file name Winmail.DAT (DAT file), coded MS-TNEF data. Can view, edit, convert, merge, split and com...
MS-TNEF (Microsoft Transport Neutral Encapsulation Format) File Type. MS-TNEF files usually have the file name Winmail.DAT (DAT file), coded MS-TNEF data. Can view, edit, convert, merge, split and compare MS-TNEF files with free online tools.
MS-TNEF files save message data for rich formatting in Outlook. Contain embedded documents, forms, or request buttons. Or contain attached files.
The winmail.dat or win.dat file has MIME type Application/MS-TNEF. Official IANA media type application/vnd.ms-tnef. Outlook uses to generate formatted messages, but not recognized by other email programs.
MS-TNEF files created using Microsoft Outlook. Most popular programs are Outlook, Windows Live Mail and Outlook Express.
Unknown MS-TNEF file. Determine problem cause. Verify associated software, install a program supporting MS-TNEF or check other possible errors. Contact an expert if needed.
On Windows right click MS-TNEF file, Open With, Choose program. Always open option. Similar on Mac, Linux, iPhone.
Files with MS-TNEF extension used by Mac and Windows programs. Managed by Microsoft Outlook. 2 other programs support. Details on Microsoft website. Most popular are Outlook, Live Mail and Express.
Microsoft Outlook
Winmail Opener