Winmail Viewer – DAT Opener

Winmail Viewer – DAT Opener

Open Winmail.dat & MSG Files

15 ratings
11 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • September 24, 2025
  • April 16, 2026

Features

Winmail Viewer – DAT Opener screenshot #1 for iPhone
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Winmail Viewer – DAT Opener screenshot #8 for iPhone
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About

Effortlessly open and view various email attachment formats, including Winmail.dat and MSG files. Extract embedded documents and images, and manage your files with integrated storage. Supports a wide range of email and document types for seamless access.

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
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What's New in Winmail Viewer

5.3.1

April 16, 2026

- Performance improvements and stability enhancements.

Subscription plans

Yearly Premium

Unlock all premium features with no limits.

$3.991 Year
Price Updates
June 9, 2026$3.99
January 20, 2026$2.99
December 8, 2025$0.99
How to cancel Winmail Viewer subscription ⁉️
4

In-App Purchases

$5.99

Lifetime Premium Access

Lifetime Premium Access

User reviews

Simple, Fast!

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.

Kills the "winmail.dat" Headache

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.

best winmail viewer!

the best app i have ever used

Best winmail viewer!

even support msg and xps file viewer. nice

Finally, One App That Opens All of Them

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!
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Developer apps

FAQ

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.