Transport Neutral Encapsulation Format
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|mimetypes={{mimetype|application/vnd.ms-tnef}} | |mimetypes={{mimetype|application/vnd.ms-tnef}} | ||
|extensions={{ext|dat}}, {{ext|tnef}} | |extensions={{ext|dat}}, {{ext|tnef}} | ||
| + | |wikidata={{wikidata|Q1601331}} | ||
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'''Transport Neutral Encapsulation Format''' (TNEF) is a proprietary format used by Microsoft mail software to encode attachments and rich text, instead of more standards-compliant methods such as [[MIME]]. | '''Transport Neutral Encapsulation Format''' (TNEF) is a proprietary format used by Microsoft mail software to encode attachments and rich text, instead of more standards-compliant methods such as [[MIME]]. | ||
Revision as of 05:05, 5 September 2020
Transport Neutral Encapsulation Format (TNEF) is a proprietary format used by Microsoft mail software to encode attachments and rich text, instead of more standards-compliant methods such as MIME.
It is usually implemented as an attachment called winmail.dat or win.dat, which Microsoft programs know what to do with, but is a useless and confusing attachment to everybody else (unless they use one of several programs and plugins that have been devised to help non-MS-ers cope with it). When saved elsewhere as archives or samples, sometimes the .tnef file extension is used.
Software
- Fentun: Freeware Windows program to decode this attachment
- TNEF: An open source TNEF decoder utility
- Lookout: Thunderbird addon to read TNEF (based on the above TNEF decoder utility)
- Winmail Opener
