TNEF

AcronymDefinition
TNEFTransport Neutral Encapsulation Format
TNEFTransport-Neutral Encapsulated Format (Microsoft)
References in periodicals archive ?
* MSG created from TNEF attachment doesn't open in Outlook
* Changing the embedded message name of TNEF formatted EML does not take effect
Ported from the .NET version, this month's release includes the same bug fixes, issues with message encodings when converting between different message types, exceptions when loading certain message files and calendar items, Information loss when processing TNEF files, text alignment issues when loading/saving calendar items and many more.
Saving TNEF Calendar as EML loses the "Required" field
These include encoding issues while converting messages to other formats such as MHTML, MSG and EML, Headers lost during message conversion, exceptions while loading calendar files and some message files and conversion issues during TNEF calendar saving as normal EML.
* Saving TNEF Calendar as EML loses the calendar view in Outlook
Well, Winmail.dat files are attachments sent by Microsoft mail applications (Outlook, Outlook Express or Exchange) on a proprietary format called TNEF (transport neutral encapsulation format).