How To Open DAT files


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Compatible with
XP, Vista and 7

It is easy to open a DAT file with Free File Opener. Just follow these steps:

  • STEP 1
    Download Free File Opener
  • STEP 2
    Click the Open button
  • STEP 3
    Select your file and click OK

That's it, you have opened your DAT file with Free File Opener!

What is a dat file?

The winmail.dat file has a very narrow scope of relevancy: Microsoft Outlook users. The presence of the winmail.dat attachment indicates that the Microsoft Outlook user is sending the email in Rich Text format rather than Plain Text format which is also similar to BAT or CFG files. If a user chooses Rich Text formatting, only other Microsoft Outlook users can see the intended formatting. All other email provider users will receive the message, plus the mysterious winmail.dat attachment. If the original email included attachments beyond the winmail.dat attachment, non-Outlook recipients will be unable to open the attachments without using a program like Free File Opener that can decode the file.

Open dat files with Free File Opener

If you have received a file with a dat file extension and need to open or view the file, Free File Opener can help. With Free File Opener, you have a free file viewer that allows you to open all document files quickly and easily. You can also open and view over 200 other types of files including spreadsheets, pictures, movies and music files. The best part about Free File Opener is that it is a Free download!