Winmail.dat, MSG, MHT Viewer

3.4.0

Letter Opener GmbH

3.96

15,920 reviews

1,000,000+
Downloads

Free

Letter Opener - Open Winmail.dat, MSG, EML and MHT files.

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About Winmail.dat, MSG, MHT Viewer

Winmail.dat, MSG, MHT Viewer is a productivity app developed by Letter Opener GmbH.

Download Statistics

Winmail.dat, MSG, MHT Viewer has been downloaded 1 million times. In the last 30 days, the app was downloaded 8.5 thousand times.

User Ratings

Winmail.dat, MSG, MHT Viewer is rated 3.96 out of 5 stars. The rating is based on 16 thousand ratings.

App Information

Winmail.dat, MSG, MHT Viewer is FREE to download. The APK download size is 9.82 MB. The latest version available is 3.4.0. The last update was on August 31, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play January 2020.

Description

Open 📎 Winmail.dat, MSG, EML and MHT files easily and securely Letter Opener opens winmail.dat and MSG e-mail files as well as EML email files, right on your Android device.

More data about Winmail.dat, MSG, MHT Viewer

Price	Free to download
Total downloads	1 million
Recent downloads	8.5 thousand
Rating	3.96 based on 16 thousand ratings
Ranking	Not ranked
Version	3.4.0
APK size	9.82 MB
Number of libraries	16
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Winmail.dat, MSG, MHT Viewer app

Winmail.dat, MSG, MHT Viewer compared with similar apps

Common keywords of similar apps

Saved Opens Message Letter Mail Outlook Browsers Dat Attachment Microsoft Single Messages Phone Oft Apple Displays Complete Emlx Page Small Files Msg Mht Viewer Eml File Open Web Opener Email Attachments Mhtml

Keywords missing from this app

Reader Document Pdf Documents Read App View Office Word Excel Formats Ppt Bin Docx Text Reading Doc Xls Html Manage Easily Txt Save Offline Features Fast Search Format Convert Xlsx Application Simple Easy Pptx Image Recent Supported Support

Google Play Rating history and histogram

Rating history

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10K

1.3K

520

370

3.3K

Downloads over time

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Winmail.dat, MSG, MHT Viewer has been downloaded 1 million times. Over the past 30 days, it averaged 280 downloads per day.

Changelog of Winmail.dat, MSG, MHT Viewer

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Developer information for Letter Opener GmbH

Letter Opener GmbH

support+android@winmail.help

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Comments on Winmail.dat, MSG, MHT Viewer for Android

★★★★★ Yen Chow · Oct 12, 2024

Opens .msg files flawlessly while the Android Outlook app cannot.

★★★★☆ Ray Love · Mar 29, 2025

Has been perfect until now, but won't open files after recent update (error messages indicating 'unrecognized format'). I tried restarting the phone, but it made no difference. UPDATE: I installed a different app which DID then open files correctly, however, I was now getting a prompt asking me choose which app to use. Out of interest I had a go with Letter Opener again - what do you know, it now worked again! I deleted the new program and Letter Opener continues to work...

★★★★★ Tony Giffard · May 19, 2026

Works perfectly for opening outlook messages.

★☆☆☆☆ Shaun Phillips · Jul 20, 2025

Can't shrink the email to view without scrolling. The scrolling locks out too. Not good at all.

★☆☆☆☆ St Marks Regents Park · Mar 28, 2024

Useless. It froze everything irretrievably.

★☆☆☆☆ Michael Seib · Aug 11, 2026

In dark mode, text wasn't displayed in white and was thus illegible.

★☆☆☆☆ Tony Wilcox · May 10, 2025

Didn't open the screenshot that it was installed for

★☆☆☆☆ Len Keck · Oct 6, 2024

Can't decipher Outlook calendar invitations

Google Play Rankings for Winmail.dat, MSG, MHT Viewer

This app is not ranked

Technologies used by Winmail.dat, MSG, MHT Viewer

4 permissions · 16 libraries

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