Transport Neutral Encapsulation Format

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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.
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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]].
  
 
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).
 
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).

Revision as of 05:13, 2 March 2013

File Format
Name Transport Neutral Encapsulation Format
Ontology
MIME Type(s) application/vnd.ms-tnef

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).

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)

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