Convert winmail.dat or ATT0001.dat files and extract the contained files into accessible, readable files.
Cost / License
- Free
- Proprietary
Platforms
- Online
- Android
- iPhone
- Mac


Letter Opener is described as 'Open Winmail.dat, MSG and EML files. A new way to seamlessly view e-mail files without requiring an App download' and is an website. There are four alternatives to Letter Opener, not only websites but also apps for Mac, Windows, Android and iPhone. The best Letter Opener alternative is winmaildat.com, which is free. Other great sites and apps similar to Letter Opener are Winmail.dat Reader, Winmail.dat Viewer Pro Edition and Winmail Opener.
Convert winmail.dat or ATT0001.dat files and extract the contained files into accessible, readable files.


Read, view, open, convert and save the files on winmail.dat email attachments. Easy-to-use. Graphic interface (no command-line tool). Often you can obtain winmail.dat attachment in gmail and then you need this is tool.
Winmail.dat files are in fact TNEF format (Transport Neutral Encapsulation Format) sent from the senders who are using Microsoft Windows Outlook (1997, 2000, 2003, 2007, 2010) or Microsoft Exchange.



Winmail Opener is a small and simple utility that allows you to view and extract contents of TNEF-encoded messages (infamous winmail.dat). Winmail Opener can decode and show RTF message text and all embedded attachments, has full drag-and-drop support and supports command line...
