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Winmail Opener

Convert unreadable winmail.dat files and open encoded Outlook DAT attachments.

Convert the unviewable by many email clients winmail.dat files, or TNEF-encoded files, to readable formats, namely RTF files. Select the winmail.dat files, view the displayed email, and save them as common RTF files. Work with embedded attachments using standard Open, Open with, and Copy system popup menu commands.


  • Allows working with embedded attachments
  • Supports command line mode
  • Batch decoding mode


  • Comes with third-party components
  • Developed by Eolsoft
  • Latest version:
  • License: Free
  • Updated: August 01, 2021
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