Open DAT files with File Viewer Plus

Winmail.dat file open in File Viewer Plus 4
Winmail.dat file open in File Viewer Plus 4

Do you need to open a Winmail.dat file?

File Viewer Plus can open Winmail.dat files and allows you to view their content and open supported attachments. It can also convert Winmail.dat files to other formats, such as EML, MSG, HTML, and plain text.

Open Winmail.dat files without Microsoft Outlook. Try File Viewer Plus for free today!


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What is a .DAT file?

Winmail.dat files are data files created by Microsoft Exchange Server to contain rich text (RTF) formatting information for emails sent by Microsoft Outlook or Microsoft Mail. The files are typically invisible to the recipient because they are only meant to be read by the email client receiving the message. However, if the mail client cannot read the formatting information, the Winmail.dat file is visible to the recipient and attached to the email message.

If you receive an email message with a Winmail.dat file attached, you can open it with File Viewer Plus. The program allows you to view the message's contents and convert it to an email format, such as EML or MSG. You can also convert it to HTML or plain text.

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About File Viewer Plus

File Viewer Plus is the universal file viewer for Windows. Why pay for dozens of software programs when you only need one? Install File Viewer Plus, and you'll be able open 400 file types with a single app.

You can also edit, save, print, and convert your files. Unknown file on your PC? No problem — the app's advanced file identification algorithm can identify over 10,000 file formats, including files with incorrect or missing file extensions. File Viewer Plus is the ultimate file viewer "plus" much more!

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