Winmail.dat Opener & Reader

Contains ads
375 reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
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Screenshot image
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About this app

Winmail.dat opener will help you to extract files and messages with all attributes from Winmail.dat files. Launch the app and open winmail.dat file using the system's default picker; no permissions are required.

Winmail.dat, or in other words, TNEF, is a Microsoft proprietary file format designed for Outlook and Exchange Server attachments. Winmail.dat extractor uses two methods of TNEF file parsing that guarantee the successful result of the work.

Winmail.dat extractor does not require any permissions for its work and can't touch any of your data, only the one you personally choose to.
Read winmail.dat file message and attachments
Updated on
Jul 28, 2026

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
  • This app may collect these data types
    Location, App info and performance, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

363 reviews
A Google user
February 13, 2020
After a bit of messing about you open your file but when you gl to look at it later the app won't open the file saying it is not a valid file
30 people found this review helpful
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Evansir
February 13, 2020
Hello! Sorry for bad experience! Interesting problem, please, provide your file so I can check and resolve the problem
Gokummit
June 7, 2020
It says that the files I have are not valid .dat files even though they clearly are .dat files.
41 people found this review helpful
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Evansir
June 7, 2020
Hello! But is it outlook winmail dat attachment?
A Google user
September 13, 2018
Didn't work. Tried to open a Win.dat attachment in an email, phone didn't recognize this app as being installed.
136 people found this review helpful
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Evansir
September 13, 2018
Hello! You need to save file and open it from the app. But you give me good idea for update🙂

What’s new

Thank you for using TNEF and Winmail.dat Extractor!

What's new:
Bug fixes and interface improvements
Content rating
Everyone
Learn more

App support

About the developer
Yevhen Kniaziuk
kvazios@gmail.com
street Volodimira Ukrayintsia, building 45, flat 103 Zaporizhzhia Запорізька область Ukraine 69118

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