Best Winmail Apps

246+ iOS apps curated and reviewed

3.9 avg rating
17 free apps
Updated November 2026

With an average user rating of 3.9★, the winmail category is one of the App Store's strongest. Browse all 246+ apps we track, sorted so the most loved ones surface first.

Compare top Winmail Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Winmail Viewer - Letter OpenerWinmail Viewer - Letter OpenerFree4.7★ (5K)NoYesNov 2026
2Winmaildat OpenerWinmaildat OpenerFree3.5★ (77)YesYesOct 2026
3Winmail Viewer – DAT OpenerWinmail Viewer – DAT OpenerFree4.8★ (20)NoYesNov 2026
4WinmailWinmailFree—NoNoMay 2026
5Winmail Dat Opener +Winmail Dat Opener +Free3.5★ (18)YesYesOct 2026
6Winmail.dat Opener & ViewerWinmail.dat Opener & ViewerFree—NoYesOct 2026
7Winmail Reader LiteWinmail Reader LiteFree4.2★ (82)NoYesOct 2026
8Winmail Viewer - TNEF OpenerWinmail Viewer - TNEF OpenerFree—NoNoJul 2026

Top Picks for Winmail

Winmail Viewer - Letter Opener#1

Winmail Viewer - Letter Opener by Letter Opener GmbH

Open Email, MSG & XPS files
Editor's Choice
🔧 Utilities
4.7(5K ratings)
FreeIn-App Purchases
Winmail Viewer - Letter Opener screenshot 1
Winmail Viewer - Letter Opener screenshot 2
Winmail Viewer - Letter Opener screenshot 3
Winmail Viewer - Letter Opener screenshot 4

Easily open and view Winmail.dat, MSG, and XPS email files that are incompatible with most email clients. Convert embedded content like appointments and notes into native iOS formats, and access all attachments within these files.

3.5😊(77 ratings)
FreeAdsIn-App Purchases
Winmaildat Opener screenshot 1
Winmaildat Opener screenshot 2
Winmaildat Opener screenshot 3

Easily open and access files from winmail.dat attachments on your mobile device. This utility allows you to preview, resend, print, or save contained files without needing an internet connection. An optional purchase removes ads.

What We Love

  • 👍 Easy to use
  • 🚀 Works as advertised
  • 💰 Free with no hidden charges
  • 📁 Opens winmail.dat files
  • 🎉 Solves a common problem

Room to Improve

  • 🐛 Doesn't work for some users
  • 🗑️ Can't delete opened files
  • 🔄 Unreliable file handling
  • 🔒 Security concerns

More Winmail apps to explore

FAQ about Winmail

What are the best winmail apps for iPhone?
Winmail Viewer - Letter Opener tops our winmail apps ranking as of November 2026, with a 4.7-star average from 5K App Store ratings, and it's free to download.
Yes — 17 of the top winmail apps we rank are free to download, including Winmail Viewer - Letter Opener and Winmaildat Opener.
Winmail Viewer - Letter Opener has no ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 246+ winmail apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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