Winmail Viewer – DAT Opener
延平 陈 Utilities iPhoneiPadiPod touchMac
Winmail Viewer – DAT Opener is a free Utilities app for iPhone and iPad by 延平 陈. Rated 4.7/5 from 19 ratings. Requires iOS 17. Updated September 3, 2026.
- Rating
- 4.7
- 19 ratings
- Price
- Free
- on the App Store
- Size
- 25 MB
- Age 4+
- Updated
- Sep 3
- 2026 · v5.6.0
Screenshots
About Winmail Viewer – DAT Opener
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/
Ratings & reviews
4.7
19 ratings
What’s new
Version 5.6.0 · Updated September 3, 2026
- Performance improvements and stability enhancements.
App privacy
The developer, 延平 陈, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Winmail Viewer – DAT Opener
Looking for apps like Winmail Viewer – DAT Opener? Here are 6 similar apps on the App Store. The highest rated is Winmail Viewer - Letter Opener (4.7/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Winmail Viewer – DAT Opener | 4.7 / 5 (19 ratings) | Free | September 3, 2026 | |
| Winmail.dat Opener & Viewer | – | Free | Sep 29, 2026 | Compare |
| Winmaildat Opener | 3.5 / 5 (77) | Free | Nov 16, 2023 | Compare |
| Winmail Viewer - Letter Opener | 4.7 / 5 (4,988) | Free | Oct 3, 2026 | Compare |
| Any: File Explore & Viewer | 4.4 / 5 (154) | Free | Oct 28, 2024 | Compare |
| File Viewer | 3.4 / 5 (5) | Free | Jul 21, 2026 | Compare |
| TextPort: Text Message Export | 4.4 / 5 (1,507) | Free | Oct 27, 2026 | Compare |