Winmail.dat Reader

Open, convert and save the files on winmail.dat email attachments sent by Microsoft Outlook and Exchange.

Easy-to-use graphic interface (no command-line tool). The only that displays the original message subject and body.

Winmail.dat or ATT0001.dat attachments are TNEF encoded files sent by Microsoft Outlook and Exchange. Users with other e-mail clients (like Thunderbird or Lotus Notes) or platforms (like Android, Apple, iPad or iPhone) cannot natively read the winmail.dat files.