Best Winmail.dat Opener Apps

0+ iOS apps curated and reviewed

3.9 avg rating
18 free apps
Updated September 2026

With an average user rating of 3.9★, the winmail.dat opener category is one of the App Store's strongest. Browse all 0+ apps we track, sorted so the most loved ones surface first.

Compare top Winmail.dat Opener Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Winmail Viewer - Letter OpenerWinmail Viewer - Letter OpenerFree4.8★ (4.8K)NoYesSep 2026
2Winmaildat OpenerWinmaildat OpenerFree3.6★ (75)YesYesJul 2026
3Winmail Viewer - TNEF OpenerWinmail Viewer - TNEF OpenerFreeNoNoJul 2026
4Winmail Dat Opener +Winmail Dat Opener +Free3.5★ (18)YesYesAug 2026
5Winmail.dat Opener: Pro ReaderWinmail.dat Opener: Pro Reader$0.99NoNoAug 2026
6Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesSep 2026
7Winmail Viewer – DAT OpenerWinmail Viewer – DAT OpenerFree4.7★ (17)NoYesAug 2026
8Winmail File Viewer & OpenerWinmail File Viewer & OpenerFree4.1★ (86)NoYesAug 2026

Top Picks for Winmail.dat Opener

Winmail Viewer - Letter Opener#1

Winmail Viewer - Letter Opener by Letter Opener GmbH

Open Email, MSG & XPS files
Editor's Choice
🔧 Utilities
4.8(4.8K 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.

Winmaildat Opener#2

Winmaildat Opener by Maklabu GmbH

Strong Contender
🔧 Utilities
3.6😊(75 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

Room to Improve

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

More Winmail.dat Opener apps to explore

4
Winmail Dat Opener +
Winmail Dat Opener +
Winmail Dat Opener +
View windat odt xps attachment
Free

Easily open and view "winmail.dat" attachments received via email. This utility resolves issues caused by different mail program formatting, allowing you to access important files sent from Microsoft Outlook.

Open winmail.dat filesView email attachmentsResolve formatting issues
🔧 Utilities
(18)
free with in-app purchases
5
Winmail.dat Opener: Pro Reader
Winmail.dat Opener: Pro Reader
Winmail.dat Opener: Pro Reader
Dat, TNEF, MSG & XPS
$0.99
🔧 Utilities
(0)
6
Microsoft Outlook
Microsoft Outlook
Microsoft Outlook
Secure Email, Calendar & Files
Free

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

Unified inbox for multiple email accountsSmart inbox sortingQuick swipe actions
📊 Productivity
(9.2M)
free with in-app purchases
7
Winmail Viewer – DAT Opener
Winmail Viewer – DAT Opener
Winmail Viewer – DAT Opener
Open Winmail.dat & MSG Files
Free

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.

Open Winmail.dat, MSG, OFT, XPS/OXPS, and EML filesExtract attachments like PDFs and Office documentsView formatted messages with original layout
🔧 Utilities
(17)
freemium
8
Winmail File Viewer & Opener
Winmail File Viewer & Opener
Winmail File Viewer & Opener
Extract files from winmail.dat
Free

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.

Open winmail.dat / TNEF filesExtract hidden email attachmentsPreview common file types
💼 Business
(86)
free with in-app purchases
9
Winly: Winmail.dat Opener
Winly: Winmail.dat Opener
Winly: Winmail.dat Opener
Open winmail.dat Attachments
Free
🔧 Utilities
(0)
10
Winmail.dat Opener & Viewer
Winmail.dat Opener & Viewer
Winmail.dat Opener & Viewer
Open Winmail.dat Files Easily
Free
🔧 Utilities
(0)
11
Dat Unpack - Winmail Viewer
Dat Unpack - Winmail Viewer
Dat Unpack - Winmail Viewer
Open, Extract Winmail Files
Free
📊 Productivity
(0)
12
Winmail.dat Viewer & Opener
Winmail.dat Viewer & Opener
Winmail.dat Viewer & Opener
Winmail.dat Attachment Reader
Free
$1.99 | 100% OFF

Easily open and extract attachments from Winmail.dat, .msg, and .oft email files directly on your device. This utility offers a private, offline solution with a one-time purchase, ensuring your data never leaves your phone.

Open winmail.dat (TNEF) filesOpen Outlook .msg and .oft filesExtract attachments (photos, PDFs, Word, Excel)
🔧 Utilities
(5)
paid
13
Winmail.Dat Opener · Win Dat
Winmail.Dat Opener · Win Dat
Winmail.Dat Opener · Win Dat
Open Win Mail Dat File, Windat
Free
📊 Productivity
(0)
14
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
RAR, Winmail.dat Reader, TNEF
Free

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.

Extract winmaildat, msg, xps filesView file contentsSave extracted files
📊 Productivity
(1)
free
15
Zarfio Mail
Zarfio Mail
Zarfio Mail
Business email on your domain
Free
💼 Business
(0)
16
SMTP Lookup
SMTP Lookup
SMTP Lookup
SMTP lookup for any domain
Free
🔧 Utilities
(0)
17
Saleshandy
Saleshandy
Saleshandy
Smart Inbox Management
Free

Streamline your email workflow with a unified inbox that tracks emails, schedules messages, and provides real-time notifications. This platform helps businesses and agencies generate leads through hyper-personalized cold emails.

Unified inbox managementEmail trackingMessage scheduling
💼 Business
(0)
free
18
MailX Smart Mail Notifications
MailX Smart Mail Notifications
MailX Smart Mail Notifications
by MailX Limited Liability Company
Free
💼 Business
(0)
19
WinDat Opener
WinDat Opener
WinDat Opener
Decodes winmail.dat files
$5.99

Easily open and extract attachments from winmail.dat email files. This utility integrates with your device's file manager and cloud storage, allowing you to preview or open embedded documents and images with other applications.

Decodes all winmail.dat filesiOS 17 and iPadOS 17 supportDrag-and-drop support on iPads
🔧 Utilities
(3)
paid
20
VoiceInbox
VoiceInbox
VoiceInbox
Voice-first email client
Free
📊 Productivity
(0)

FAQ about Winmail.dat Opener

What are the best winmail.dat opener apps for iPhone?
Winmail Viewer - Letter Opener tops our winmail.dat opener apps ranking as of September 2026, with a 4.8-star average from 4.8K App Store ratings, and it's free to download.
Yes — 18 of the top winmail.dat opener 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 September 2026.
This app allows you to open and view Winmail.dat, MSG, and XPS email files that are typically unreadable by other email applications. It converts embedded content like appointments and notes into formats compatible with your iOS device and provides access to all attachments.
Simply tap on the Winmail.dat file when you receive it, and the app will open it automatically. It then processes the file to make its content accessible, including any attachments or embedded items like calendar events.