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/