AlternativeTo Logo Alternatives is described as 'Convert winmail.dat or ATT0001.dat files and extract the contained files into accessible, readable files'. There are five alternatives to, not only websites but also apps for Windows and Mac. The best alternative is Winmail.dat Viewer Pro Edition. It's not free, so if you're looking for a free alternative, you could try Wabmail or Winmail.dat Reader. Other great sites and apps similar to are Letter Opener (Free) and Winmail Opener (Free).

    This page was last updated Mar 17, 2021
    1. 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.
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      • FreeProprietary
      • Windows
      Sometimes, you just quickly have to get a list of all the e-mail addresses in your address book.
    2. 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.
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      • FreeProprietary
      • Online
      Open Winmail.dat, MSG and EML files. A new way to seamlessly view e-mail files without requiring an App download. Open E-Mail Files easily and securely
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    3. Winmail Opener is a small and simple utility that allows you to view and extract contents of TNEF-encoded messages (infamous winmail.dat).
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