# Winmail Viewer – DAT Opener — Open Winmail.dat & MSG Files > Open and extract attachments from Winmail.dat, MSG, OFT, EML, XPS, and OXPS files. (iPhone/iPad app by 延平 陈.) - Source: https://appshunter.io/ios/app/winmail-viewer-dat-opener/id6752894720 (this page in markdown: same URL + `.md`) - Developer: [延平 陈](https://appshunter.io/developer/1833168926) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 17 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 17 · 25 MB - Languages: American English, Arabic, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Hebrew, Hindi and 16 more - Released: 2025-09-24 - Data updated: 2026-09-03 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/winmail-viewer-dat-opener/id6752894720/reviews.md ## What is Winmail Viewer? Open and view Winmail.dat (Microsoft TNEF), MSG, OFT, XPS/OXPS, and EML files instantly on iPhone and iPad. Access Outlook-generated attachments, decode hidden content, and extract files in seconds. Winmail Viewer is designed to open Microsoft Outlook and Exchange email formats that many apps can’t read. Whether you receive a Winmail.dat (TNEF) attachment or an Outlook MSG/OFT message file, the app decodes and displays the full content — including formatted messages and embedded attachments — so nothing is lost. Open files directly from Mail, Files, AirDrop, or any supported app, and instantly access the message body, documents, and images inside. SUPPORTED FILE TYPES • Winmail.dat (Microsoft TNEF) — Decode Transport Neutral Encapsulation Format files generated by Outlook and Exchange • MSG — Open standalone Microsoft Outlook message files with full formatting and attachments • OFT — View Outlook email template files • EML — Read standard email message files from most email clients • XPS / OXPS — Open Microsoft XML Paper Specification documents with a smooth, PDF-like reading experience WHAT YOU CAN EXTRACT • Attachments including PDF, Word (DOC/DOCX), Excel (XLS/XLSX), PowerPoint (PPT/PPTX) • Images (JPG, PNG, GIF, TIFF, and more) • Rich Text (RTF) and HTML-formatted messages • Embedded files and hidden Outlook content KEY FEATURES • Instantly open Winmail.dat (TNEF), MSG, OFT, XPS/OXPS, and EML files • View fully formatted messages with original layout preserved • Extract and share attachments in seconds • Reply to or forward messages directly from the app • Search by subject, sender, or keyword • Save and organize files with fast SwiftData storage • Dark Mode for comfortable reading • Full integration with the iOS Files app No more “winmail.dat” confusion. Open, decode, extract, and share Outlook attachments effortlessly. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Open Winmail.dat, MSG, OFT, XPS/OXPS, and EML files - Extract attachments like PDFs and Office documents - View formatted messages with original layout - Search messages by subject, sender, or keyword - Save and organize files with SwiftData storage - Dark Mode support - iOS Files app integration ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Yearly | $5.99 | per year | | Premium Monthly | $1.99 | per month | | Premium Weekly | $1.99 | per 7 days | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Premium Access | $9.99 | one-time | ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/winmail-viewer-dat-opener/id6752894720/reviews.md ### 5/5 — Solved My Email Issues Instantly! *2026-06-11* This app works flawlessly. I kept receiving "winmail.dat" attachments from clients that I couldn't open on my device, but this app reads them perfectly every single time. It extracts files and opens text instantly without any formatting issues. The interface is clean, straightforward, and saved me so much frustration. It is a must-have tool for work! ### 5/5 — Highly recommend! *2026-06-03* Best Winmail Viewer ### 5/5 — Works well for Winmail.dat file! *2026-05-31* It works as I expected. Extract attachment instant. ### 5/5 — Simple, Fast! *2026-04-08* I was constantly frustrated by receiving 'winmail.dat' attachments ,This app solved the problem instantly! It is incredibly lightweight and user-friendly—just drag and drop the file, and you can see all the contents and attachments immediately. ### 5/5 — Kills the "winmail.dat" Headache *2026-02-15* Instantly decodes those annoying winmail.dat attachments from Outlook users. Opens right from Mail app, revealing formatted messages and attachments perfectly. Simple, fast, and absolutely essential. ### 5/5 — best winmail viewer！ *2026-02-11* the best app i have ever used ### 5/5 — Best winmail viewer！ *2026-01-13* even support msg and xps file viewer. nice ### 5/5 — Finally, One App That Opens All of Them *2025-11-12* I was looking for a single app that could handle all the weird files I get from my Windows-using colleagues—DAT, MSG, and even XPS. This viewer is the perfect all-in-one solution. It's clean, fast, and does exactly what it promises. I can now view, extract, and save attachments without having to ask the sender to resend the email in a different format. It has saved me so much time and embarrassment. Highly recommended! ### 5/5 — Winmail File Viewer – Essential Email Savior! *2025-11-06* This app is a lifesaver for decoding tricky Winmail.dat, TNEF, MSG, and XPS files that plague Outlook exchanges. Opens everything instantly—attachments, rich text, images—with zero hassle. Offline support, ad-free, and super intuitive. No more frustration over unreadable emails; it’s a must for pros dealing with cross-platform chaos. Download it yesterday! ### 5/5 — Save me so much time *2025-10-28* Work flawlessly-highly recommend! ## Frequently asked questions about Winmail Viewer ### What file types can Winmail Viewer open? Winmail Viewer can open Winmail.dat (TNEF), MSG, OFT, EML, XPS, and OXPS files. It also supports extracting various attachments like PDFs, Word documents, Excel spreadsheets, and images. ### How does Winmail Viewer handle attachments? You can extract and share attachments directly from the app. This includes common document types such as PDF, DOC/DOCX, XLS/XLSX, PPT/PPTX, as well as images like JPG, PNG, and GIF. ### Can I reply to or forward emails using Winmail Viewer? Yes, Winmail Viewer allows you to reply to or forward messages directly from within the application, offering a convenient way to manage your opened emails. ### Does Winmail Viewer have a search function? Yes, Winmail Viewer includes a search feature that allows you to find messages by subject, sender, or specific keywords, making it easier to locate important information. ### What are the subscription plans for Winmail Viewer Pro? Winmail Viewer Pro offers a monthly subscription for $0.99 with a 3-day free trial, and a yearly subscription for $2.99, also with a 3-day free trial. ### Is Winmail Viewer available on multiple Apple devices? Yes, Winmail Viewer is supported on Mac, iPhone, and iPad, allowing you to access and manage your email files across your Apple ecosystem. ### How often is Winmail Viewer updated? The latest version, 5.2, was released on March 22, 2026, indicating recent development and ongoing support for the application. ### What is the age rating for Winmail Viewer? Winmail Viewer has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 5.3.1 — 2026-04-16 - Performance improvements and stability enhancements. ### 5.3.0 — 2026-04-02 - Performance improvements and stability enhancements. ### 5.2 — 2026-03-22 - Performance improvements and stability enhancements. ### 5.1 — 2026-03-14 - Performance improvements and stability enhancements. ### 5.0 — 2026-02-14 - Performance improvements and stability enhancements. - Added support for opening .eml and .emlx email message files ## Apps similar to Winmail Viewer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Winmail.dat Opener & Viewer](https://appshunter.io/ios/app/winmaildat-opener-and-viewer/id6758459209) | — | Free | Utilities | | [INKBIRD](https://appshunter.io/ios/app/inkbird/id1589369968) | 3.7 (6,637) | Free | Utilities | | [Zip & RAR & 7z File Extractor](https://appshunter.io/ios/app/zip-and-rar-and-7z-file-extractor/id6505011772) | 4.4 (462) | Free | Utilities | | [Any: File Explore & Viewer](https://appshunter.io/ios/app/any-file-explore-and-viewer/id1604309599) | 4.4 (153) | Free | Utilities | | [Winmail Viewer - Letter Opener](https://appshunter.io/ios/app/winmail-viewer-letter-opener/id411897373) | 4.8 (4,844) | Free | Utilities | | [Winmaildat Opener](https://appshunter.io/ios/app/winmaildat-opener/id596413390) | 3.6 (75) | Free | Utilities | ## More apps by 延平 陈 - [OpenEML - EML Reader & Viewer](https://appshunter.io/ios/app/openeml-eml-reader-and-viewer/id6751085601) - [XPS Viewer - XPS to PDF](https://appshunter.io/ios/app/xps-viewer-xps-to-pdf/id6755060389) - [PST Viewer - Email Reader](https://appshunter.io/ios/app/pst-viewer-email-reader/id6757521943) - [MSG Viewer - Email Opener](https://appshunter.io/ios/app/msg-viewer-email-opener/id6758084152) - [Winmail.dat Viewer & Opener](https://appshunter.io/ios/app/winmaildat-viewer-and-opener/id6758431753) All apps by 延平 陈: https://appshunter.io/developer/1833168926 ## Related topics [winmail viewer](https://appshunter.io/ios/topics/winmail-viewer) · [.dat viewer](https://appshunter.io/ios/topics/dat-viewer) · [winmail](https://appshunter.io/ios/topics/winmail) · [windat opener](https://appshunter.io/ios/topics/windat-opener) · [winmail.dat opener](https://appshunter.io/ios/topics/winmail-dat-opener) · [winmail file viewer](https://appshunter.io/ios/topics/winmail-file-viewer) · [xps viewer](https://appshunter.io/ios/topics/xps-viewer) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*