Winmail Opener

If you are looking for Winmail Opener, you have come to the right place. We explain what Winmail Opener is and point you to the official download.

What is Winmail Opener?

Winmail.dat attachments are often seen in emails coming from earlier iterations of Microsoft’s Outlook software (usually the ’97 or 2000 versions) when these have not been set to email data as HTML or TXT. The result, especially for recipients who do not use Outlook themselves, is the winmail.dat file. These are essentially the emails formatted with TNEF, which is a proprietary format from Microsoft and which some email clients are unable to recognize. This does not mean the message or the contents of the files are lost, however, as users can employ Winmail readers to access them.

The Winmail Opener is an example of such programs. It is a lightweight, free and zero-ads downloadable program that works on Windows operating systems and which is available in 20 languages, including English, Korean, French, German and Japanese. Users can open winmail.dat files by browsing their computers and selecting them or by simply dragging the files and dropping them into the utility’s window. Drag-and-drop can be used to save any files the program has managed to successfully decode. In addition, the software features support for batch decoding besides its ability to perform RTF extraction.

Download Winmail Opener from the developer does not provide software hosting. We send you directly to the developer's site, to make sure you download the latest, original version of the program.

Download Winmail Opener (external link)


About file types supported by Winmail Opener aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about which types of files Winmail Opener can process, please do get in touch - we would love hearing from you.

Last updated: : June 1, 2014