Winmail.dat Opener

Contains ads
2.7
4.25K reviews
1M+
Downloads
Content rating
Everyone
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About this app

Do you sometimes get "Winmail.dat" files containing important documents? Winmail.dat Opener is a free app that allows you to open these files and view, save or share their contents.

This app is free of charge and fully functional, without the need for further in-app purchases.

The app requires only about 3mb space and no unnecessary permissions.

Your files are processed on your phone and not sent to any external servers. This ensures that your information stays private and the app will still work when you are offline.

The app is supported by unobtrusive ads -- no overlays, pop-ups or the like.
Updated on
Nov 6, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

2.7
4K reviews
Wolfgang Riss
September 6, 2025
Works well, so far. The only thing that feels superfluous is having to grant access rights for the same folder every time you save an attachment. As for ads, I'd rather pay for an ad-free premium version.
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A Google user
September 28, 2019
The application opens winmail.dat file and allows me to open attached files but it is impossible to extract these files out of winmail.dat. Even when I select files I want to extract and tap save icon, I can select destination directory, but there is no save button - only cancel.
8 people found this review helpful
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Tobias Reinhardt
November 14, 2019
Hi. Admittedly the UI of the old version was not intuitive and had generally a lot room for improvement. With the new version we improved not only the UI, but also the opening rate.
A Google user
January 9, 2019
Unable to open any files and all of which that are sent to me are important. Also after I attempted to open two files, each time afterwards that I recievied a new one by email it won't even show up in the app.
210 people found this review helpful
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What’s new

Bugfixes