# Msg Viewer Pro

> View and manage Outlook .msg, .oft, .eml, winmail.dat, and .mht files. (iPhone/iPad app by 群群 刘.)

- Source: https://appshunter.io/ios/app/msg-viewer-pro/id1019539949 (this page in markdown: same URL + `.md`)
- Developer: [群群 刘](https://appshunter.io/developer/687318257)
- Category: Business, Productivity
- Price: $4.99
- Rating: 4.00/5 from 4 App Store ratings · 142 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 8 MB
- Languages: American English
- Released: 2015-09-23
- Data updated: 2026-09-03
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/msg-viewer-pro/id1019539949/reviews.md

## What is Msg Viewer Pro?

Msg Viewer Pro: the best, easiest, fastest, and reliable way to view Microsoft Outlook *.msg, *.oft, winmail.dat(Microsoft TNEF), *.mht and *.eml files. 

No subscription, just one-time purchase for iPhone, iPad, and Mac.

KEY FEATURES:

◆Easy to use, open msg, winmail, mht and eml files.

◆Quick look msg, winmail, mht and eml files.

◆Add files through iTunes File Sharing.

◆View messages, notes, contacts, and attachments.

◆Share or open document with other App.

◆Preview attachments, Share attachments.

◆Print document.

◆Dark mode supported.


SUPPORT:

Please feel free to contact us if you have any questions about using our products at any time.
Email: support@firmshell.com

## Key features

- Open MSG, OFT, EML, Winmail.dat, MHT files
- View messages, notes, contacts, attachments
- Preview and share attachments
- Add files via iTunes File Sharing
- Share or open documents with other apps
- Print documents
- Dark mode support

## What do users think of Msg Viewer Pro?

Overall sentiment: positive

**Pros**

- ✅ Opens .msg files reliably on Mac
- 👍 User-friendly and simple interface
- 💰 Affordable one-time purchase ($4.99-$5)
- 📎 Handles attachments well
- 🔄 Works across Mac, iPhone, and iPad
- 📄 Export to multiple formats (PDF, TXT, HTML, EML)
- ⚡ Quick and responsive performance
- 🔍 QuickLook integration for preview
- 📧 Reply/forward functionality
- 🎯 Solves Windows-Mac email compatibility gap
- 🔧 Active development and regular updates
- 📋 Displays email headers and metadata

**Cons**

- 🐛 Frequent crashes on various macOS versions
- 🐛 Crashes especially with large files and attachments
- ⚠️ Performance issues with large .mbox files (8.5GB+)
- 🖼️ Inline images don't render correctly
- 🖼️ Images appear as attachments instead of embedded
- 📊 Search functionality extremely slow
- ❌ Doesn't support all Outlook file formats (olk15Message)
- ❌ Cannot open some .mbox files despite claims
- ❌ Fails to display message body in some cases
- ❌ Inconsistent decoding of message content
- 📑 PDF export cuts off content on right side
- 🔐 Privacy concerns about data collection permissions

**Commonly reported bugs**

- App crashes repeatedly when opening certain messages
- Crashes when closing emails within the app
- M1/M1 Pro/Max compatibility issues
- Memory management problems with large files
- Search crashes on large archives
- Unexpected quit on macOS 15.5
- Attachment display mangled or corrupted
- Nested .eml attachments become corrupt
- Inconsistent file format support
- App closes unexpectedly even after normal shutdown
- Fails to open files from cloud services (Dropbox)

**Most requested features**

- Dark mode and light mode options
- Drag and drop functionality
- More powerful search commands
- Integration with third-party search tools (HoudahSpot)
- Direct export from .oft to .emltpl format
- Better inline image handling
- Modern toolbar icon design
- Settings to control image embedding behavior
- Support for additional document formats

## Recent user reviews (10 of 142)

All indexed reviews: https://appshunter.io/ios/app/msg-viewer-pro/id1019539949/reviews.md

### 5/5 — Супер!

*2026-08-04*

Спасибо за новый интерфейс! Все круто!

### 1/5 — Security flag on mac

*2026-05-02, version 2.8.0*

When I try to use this app to open a .msg file I get this response: ‘Apple could not verify [name of .mg file] is free of malware that may harm your Mac or compromise your privacy’.  Having downloaded it from the Apple Store I do not understand why this flag happens, but it means I cannot double click on the file to open it.

### 5/5 — Fast and Reliable

*2026-01-09, version 2.8.0*

I have a bazillion e-mails in .msg format that I need to access on my Mac and this program does it without issue, including attachments.
I hope the developer continues to update the app as necessary for the future.

### 3/5 — Crashes when closing the viewer

*2025-12-28, version 2.8.0*

macOS 26.2. The app opens fine. But when I close the main window at crashes.

### 2/5 — Crashes a lot

*2025-12-09, version 2.8.0*

Nice when it work. Lots of crashes.

### 3/5 — Crash prone

*2025-11-19, version 2.8.0*

Generally works well, but will crash repeatedly on some messages for no clear reason. Also crashes  occasionally when closing emails within the app.

### 1/5 — Software not working

*2025-10-23*

The search function does not work on .mbox files exported from Apple Mail. Also can’t display or access attachments. Completely useless without a search function

### 1/5 — Can’t handle large .mbox files

*2025-07-20, version 2.8.0*

I purchased this app so I could browse/search a large (8.5GB) .mbox archive. It loads the archive OK, and you can manually click through emails. But the search is extremely slow and crashes repeatedly, making it this app unusable for this use case. (My Mac has 128GB of RAM, so it’s not that)

### 5/5 — Супер

*2025-07-08*

Со своими задачами справляется на ура. Единственное, некоторые символы на кириллице искажает.

### 1/5 — Works, but constantly crashes

*2025-06-27, version 2.8.0*

You get to read your messages, but the app is not stable on my system (15.5 (24F74)) and crashes after most messages are opened. It opens again, but very disconcerting.

VM Region Info: 0x1e is not in any region. …  /Applications/Msg Viewer Pro.app/Contents/MacOS/Msg Viewer Pro

## Frequently asked questions about Msg Viewer Pro

### What file types can Msg Viewer Pro open?

Msg Viewer Pro supports viewing Microsoft Outlook .msg and .oft files, as well as .eml, winmail.dat (Microsoft TNEF), and .mht files. This allows you to access a wide range of email formats directly on your device.

### How do I get files into Msg Viewer Pro?

You can add files to Msg Viewer Pro through iTunes File Sharing, which is a convenient way to transfer documents between your computer and your iPhone, iPad, or Mac. Once added, you can easily view and manage them within the app.

### Is Msg Viewer Pro free to use?

No, Msg Viewer Pro is a one-time purchase application. There are no subscriptions required, offering a straightforward and cost-effective solution for viewing your email files.

### What devices is Msg Viewer Pro compatible with?

Msg Viewer Pro is designed for Apple devices, including iPhone, iPad, and Mac. You can purchase and use it across your Apple ecosystem for consistent file management.

### Can I view attachments with Msg Viewer Pro?

Yes, Msg Viewer Pro allows you to view messages, notes, contacts, and attachments. You can preview attachments, share them with other applications, or even print them directly from the app.

## Version history (last 5 releases)

### 2.6.2 — 2024-02-05

Fixed bug display image error for eml files
Other small fixes and improvements

### 2.6.1 — 2024-01-11

Fixed bug display image error
Other small fixes and improvements

### 2.6.0 — 2023-02-27

Bug fixes and stability improvements

### 2.5.9 — 2022-11-06

Some bug fixed and stability improvements

### 2.5.8 — 2022-10-24

Some bug fixed and stability improvements

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## Related topics

[msg viewer pro](https://appshunter.io/ios/topics/msg-viewer-pro) · [msg viewer](https://appshunter.io/ios/topics/msg-viewer) · [eml viewer pro](https://appshunter.io/ios/topics/eml-viewer-pro)

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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 2026-09-03.*