The converters/libytnef port
libytnef-1.9.3p0 – read and convert TNEF files
This program decodes those annoying application/ms-tnef MIME attachments that
Microsoft mail servers helpfully use to encapsulate your already MIME encoded
Due to the proliferation of Microsoft Outlook and Exchange mail servers,
more and more mail is encapsulated into this format.
The YTNEF program allows one to unpack the attachments which were encapsulated
into the YTNEF attachment. Thus alleviating the need to use Microsoft Outlook
to view them.