# Winmail.dat Viewer & Opener — Winmail.dat Attachment Reader

> Utility to open Winmail.dat, .msg, and .oft email attachments privately on-device. (iPhone/iPad app by 延平 陈.)

- Source: https://appshunter.io/ios/app/winmaildat-viewer-and-opener/id6758431753 (this page in markdown: same URL + `.md`)
- Developer: [延平 陈](https://appshunter.io/developer/1833168926)
- Category: Utilities, Business
- Price: Free with in-app purchases (on sale, was $1.99)
- Rating: 5.00/5 from 5 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 10 MB
- Languages: American English, Arabic, Czech, Dutch, French (France), German (Germany), Hebrew, Hindi, Indonesian, Italian and 14 more
- Released: 2026-01-30
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/winmaildat-viewer-and-opener/id6758431753/reviews.md

## What is Winmail.dat Viewer & Opener?

Winmail.dat Opener Pro opens winmail.dat (TNEF), .msg, and .oft Outlook email attachments on iPhone and iPad with a one-time purchase — no subscriptions.

Works fully offline with 100% on-device processing for maximum privacy. Multilingual support has been upgraded and optimized for fast, secure file access.

Tired of “free” apps that lock basic features behind subscriptions?
Hate paying monthly just to open an email attachment?

Winmail.dat Opener Pro is a pay-once, own-forever solution.
No subscriptions. No trials. No recurring fees.

The app safely unpacks Outlook winmail.dat (TNEF) files and opens .msg and .oft files directly on your device. All processing happens on-device, so your emails and attachments never leave your phone.

Key features:
  • One-time purchase. Own it forever.
  • Open winmail.dat (TNEF), Outlook .msg, and .oft files.
  • Extract attachments including photos, PDFs, Word, and Excel files.
  • 100% on-device processing for maximum privacy.
  • Optimized for the latest iOS with Dark Mode and Drag & Drop.
  • Multilingual support fully upgraded and optimized.

Supported formats:
  •Winmail.dat (TNEF)
  •Outlook Message (.msg)
  •Outlook Template (.oft)

How to use:
  1. Open the Mail app or Files app.
  2. Tap the attachment (winmail.dat, .msg, or .oft).
  3. Select Share and choose Winmail.dat Opener Pro.
  4. View, print, or save your files instantly.

No subscriptions.
No tracking.
No cloud uploads.

Just open your files — fast, private, and forever.

We update regularly to ensure compatibility with the latest iOS versions.
If you have any questions or feedback, feel free to contact us anytime.

Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Open winmail.dat (TNEF) files
- Open Outlook .msg and .oft files
- Extract attachments (photos, PDFs, Word, Excel)
- 100% on-device processing
- One-time purchase, no subscriptions
- Supports Dark Mode and Drag & Drop

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Yearly | $12.99 | per year |
| Premium Weekly | $1.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Winmail Opener Pro | $19.99 | one-time |


## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/winmaildat-viewer-and-opener/id6758431753/reviews.md

### 5/5 — Good Winmail Viewer Tool!

*2026-06-11*

Simple & fast.

### 5/5 — Perfect, lightweight, and does exactly what it says!

*2026-04-16*

I was so frustrated getting unreadable Winmail.dat attachments from my colleagues using Outlook. This app solved the problem instantly. It’s incredibly lightweight and easy to use—just open the file and all the hidden attachments appear. It has saved me so much time and back-and-forth emailing. A must-have for any Mac user in a corporate environment!

### 5/5 — Does exactly what it needs to！

*2026-04-09*

Opens winmail.dat files instantly. No fuss, no extra steps. A lifesaver for Outlook emails on Mac or mobile. Highly recommend!

### 5/5 — works perfectly！

*2026-03-19*

Lightning fast, extracts every attachment perfectly (PDFs, Word, pics, zips), seamless Mail app share, clean design, zero bugs. Finally ditch the frustration.

### 5/5 — Highly recommend!

*2026-03-18*

I was so tired of asking people to resend emails because of these winmail.dat attachments. Winmail.dat Opener Pro works flawlessly. It’s fast, reliable, and has become an essential part of my workflow.

### 5/5 — my favor winmail viewer app

*2026-02-22*

very well，no ads，reliable

### 5/5 — Reliable & Fast

*2026-02-20*

free and no ads，good.

### 5/5 — best winmail viewer！

*2026-02-12*

parse windat file very well.

## Frequently asked questions about Winmail.dat Viewer & Opener

### How do I open a winmail.dat file with Winmail.dat Opener Pro?

To open a winmail.dat, .msg, or .oft attachment, tap the attachment in your email or Files app, select 'Share', and then choose Winmail.dat Opener Pro from the list of apps. Your files will be processed instantly on-device.

### Does Winmail.dat Opener Pro require an internet connection?

No, Winmail.dat Opener Pro works fully offline. All file processing is done on your device, ensuring maximum privacy and accessibility without needing an internet connection.

### What file formats can Winmail.dat Opener Pro open?

Winmail.dat Opener Pro can open winmail.dat (TNEF) files, as well as Outlook Message (.msg) and Outlook Template (.oft) files. It can also extract various attachments like photos, PDFs, Word, and Excel documents.

### Is Winmail.dat Opener Pro a subscription app?

No, Winmail.dat Opener Pro is a one-time purchase application. You pay once and own it forever, with no recurring fees, subscriptions, or trials.

### What devices is Winmail.dat Opener Pro available on?

Winmail.dat Opener Pro is available for iPhone, iPad, and iPod touch. It is optimized for the latest iOS versions and supports features like Dark Mode and Drag & Drop.

### How often is Winmail.dat Opener Pro updated?

The app is updated regularly to ensure compatibility with the latest iOS versions. The latest update was on March 22, 2026, with version 5.2.

### What is the age rating for Winmail.dat Opener Pro?

Winmail.dat Opener Pro has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

### Does Winmail.dat Opener Pro track user data?

No, Winmail.dat Opener Pro prioritizes user privacy. It explicitly states there is no tracking, no cloud uploads, and all processing is done 100% on-device.

## Version history (last 5 releases)

### 5.4.0 — 2026-04-17

- Performance improvements and stability enhancements.

### 5.3.1 — 2026-04-14

- Performance improvements and stability enhancements.

### 5.3.0 — 2026-04-07

- Performance improvements and stability enhancements.

### 5.2 — 2026-03-22

- Performance improvements and stability enhancements.

### 3.0 — 2026-03-15

- Performance improvements and stability enhancements.

## More apps by 延平 陈

- [OpenEML - EML Reader & Viewer](https://appshunter.io/ios/app/openeml-eml-reader-and-viewer/id6751085601)
- [Winmail Viewer – DAT Opener](https://appshunter.io/ios/app/winmail-viewer-dat-opener/id6752894720)
- [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)

All apps by 延平 陈: https://appshunter.io/developer/1833168926

## Related topics

[winmail.dat viewer & opener](https://appshunter.io/ios/topics/winmail-dat-viewer-opener) · [windat opener](https://appshunter.io/ios/topics/windat-opener) · [winmaildat opener](https://appshunter.io/ios/topics/winmaildat-opener) · [.dat viewer](https://appshunter.io/ios/topics/dat-viewer)

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*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 2026-08-20.*