Winmail Viewer – DAT Opener
Winmail Viewer – DAT Opener is made and published by 延平 陈. AppBrain is an independent app data site and isn't affiliated with 延平 陈. The app name, icon, screenshots and description belong to 延平 陈 and are shown as published on the App Store.
AppBrain's verdict
- Rating on App Store
- 4.74
- 19 ratings
- Last updated
- September 3, 2026
It doesn't have enough ratings yet to judge what users think.
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Releases
Updates seen on the App Store- Version
- 5.6.0
- Launched
- September 2025
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 25.1 MB
- Content rating
- Everyone
Technologies used by Winmail Viewer – DAT Opener
About the app and developer
About Winmail Viewer – DAT Opener
Winmail Viewer – DAT Opener is an utilities app developed by 延平 陈.
User Ratings
Winmail Viewer – DAT Opener is rated 4.74 out of 5 stars. The rating is based on 19 ratings.
App Information
Winmail Viewer – DAT Opener is freely available from the App Store. The app size is 25.06 MB. The latest version available is 5.6.0. The last update was on September 3, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since September 2025.
Developer information for 延平 陈
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Store listing
By 延平 陈, from the App Store
Description by 延平 陈 Written by the developer, not by AppBrain. Click to read.
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/