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Best Winmail File Viewer Apps

246+ iOS apps curated and reviewed

3.8 avg rating
17 free apps
Updated September 2026

Winmail File Viewer & Opener is the household name in winmail file viewer, but it's far from the only option. We track 246+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Winmail File Viewer Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Winmail File Viewer & OpenerWinmail File Viewer & OpenerFree4.1★ (86)NoYesSep 2026
2Winmail Viewer - Letter OpenerWinmail Viewer - Letter OpenerFree4.8★ (4.9K)NoYesSep 2026
3Winmail Viewer:for DAT,XPS,MSGWinmail Viewer:for DAT,XPS,MSGFree2.0★ (1)NoYesMay 2026
4Winmail Dat Opener +Winmail Dat Opener +Free3.5★ (18)YesYesAug 2026
5Winmail Viewer - TNEF OpenerWinmail Viewer - TNEF OpenerFree—NoNoJul 2026
6Dat Unpack - Winmail ViewerDat Unpack - Winmail ViewerFree—YesYesMay 2026
7Winmail.Dat Opener · Win DatWinmail.Dat Opener · Win DatFree—NoYesSep 2026
8Winmail Dat, MSG & EML OpenerWinmail Dat, MSG & EML OpenerFree—NoYesSep 2026

Top Picks for Winmail File Viewer

Winmail File Viewer & Opener#1

Winmail File Viewer & Opener by An Sinh Pham

Extract files from winmail.dat
Editor's Choice
💼 Business
4.1😐(86 ratings)
FreeIn-App Purchases
Winmail File Viewer & Opener screenshot 1
Winmail File Viewer & Opener screenshot 2
Winmail File Viewer & Opener screenshot 3
Winmail File Viewer & Opener screenshot 4
Winmail File Viewer & Opener screenshot 5
Winmail File Viewer & Opener screenshot 6

Easily open and extract attachments from winmail.dat files on your Apple devices. This app decodes TNEF files, allowing you to view and save hidden email attachments like PDFs and images directly to your device.

What We Love

  • 🚀 Easy to use
  • 👍 Solves a common problem
  • 💡 Useful for business users
  • 🚀 Works as advertised
  • 👍 Great customer service

Room to Improve

  • 🐛 Doesn't work with some file types
  • 💰 Requires payment for extended use
  • 🐛 Compatibility issues with newer iOS versions
  • 🐛 Crashes or doesn't open files
Winmail Viewer - Letter Opener#2

Winmail Viewer - Letter Opener by Letter Opener GmbH

Open Email, MSG & XPS files
Strong Contender
🔧 Utilities
4.8(4.9K 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:for DAT,XPS,MSG#3

Winmail Viewer:for DAT,XPS,MSG by 浩 宋

RAR, Winmail.dat Reader, TNEF
Worth Considering
📊 Productivity
2.0(1 ratings)
FreeIn-App Purchases
Winmail Viewer:for DAT,XPS,MSG screenshot 1
Winmail Viewer:for DAT,XPS,MSG screenshot 2

This tool allows users to extract, view, and save the contents of winmaildat, msg, and xps files. It provides a complete solution for managing these file types, including viewing all attachments and rich text messages.

More Winmail File Viewer apps to explore

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FAQ about Winmail File Viewer

What are the best winmail file viewer apps for iPhone?
Winmail File Viewer & Opener tops our winmail file viewer apps ranking as of September 2026, with a 4.1-star average from 86 App Store ratings, and it's free to download.
Yes — 17 of the top winmail file viewer apps we rank are free to download, including Winmail File Viewer & Opener and Winmail Viewer - Letter Opener.
Winmail File Viewer & Opener has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 246+ winmail file viewer apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
A winmail.dat file, also known as TNEF, is a proprietary format used by Microsoft Outlook and Exchange that can sometimes hide the actual attachments within an email. This app is designed to decode these files and reveal the hidden content.
You can import a winmail.dat file directly from your Mail app, the Files app, or by using the Share Sheet. Once imported, the app will process the file, allowing you to view its contents and extract attachments.