Best Winmail Viewer Apps

244+ iOS apps curated and reviewed

3.8 avg rating
16 free apps
Updated October 2026

Winmail Viewer is the household name in winmail viewer, but it's far from the only option. We track 244+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Winmail Viewer Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Winmail Viewer - Letter OpenerWinmail Viewer - Letter OpenerFree4.7★ (5K)NoYesNov 2026
2Winmail Viewer – DAT OpenerWinmail Viewer – DAT OpenerFree4.7★ (19)NoYesOct 2026
3Winmail Viewer - TNEF OpenerWinmail Viewer - TNEF OpenerFree—NoNoJul 2026
4Winmail File Viewer & OpenerWinmail File Viewer & OpenerFree4.1★ (91)NoYesOct 2026
5Winmail Viewer:for DAT,XPS,MSGWinmail Viewer:for DAT,XPS,MSGFree2.0★ (1)NoYesMay 2026
6Dat Unpack - Winmail ViewerDat Unpack - Winmail ViewerFree—YesYesMay 2026
7MailPeek MSG ViewerMailPeek MSG Viewer$3.99—NoNoOct 2026
8Winmail.dat Opener · ViewerWinmail.dat Opener · ViewerFree5.0★ (6)NoYesOct 2026

Top Picks for Winmail Viewer

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.

Winmail Viewer – DAT Opener#2

Winmail Viewer – DAT Opener by 延平 陈

Open Winmail.dat & MSG Files
Strong Contender
🔧 Utilities
4.7(19 ratings)
FreeIn-App Purchases
Winmail Viewer – DAT Opener screenshot 1
Winmail Viewer – DAT Opener screenshot 2
Winmail Viewer – DAT Opener screenshot 3
Winmail Viewer – DAT Opener screenshot 4
Winmail Viewer – DAT Opener screenshot 5
Winmail Viewer – DAT Opener screenshot 6

Effortlessly open and view various email attachment formats, including Winmail.dat and MSG files. Extract embedded documents and images, and manage your files with integrated storage. Supports a wide range of email and document types for seamless access.

More Winmail Viewer apps to explore

FAQ about Winmail Viewer

What are the best winmail viewer apps for iPhone?
Winmail Viewer - Letter Opener tops our winmail viewer apps ranking as of October 2026, with a 4.7-star average from 5K App Store ratings, and it's free to download.
Yes — 16 of the top winmail viewer apps we rank are free to download, including Winmail Viewer - Letter Opener and Winmail Viewer – DAT Opener.
Winmail Viewer - Letter Opener has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 244+ winmail viewer apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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