Winmail File Viewer & Opener vs Msg Viewer Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Winmail File Viewer & Opener
Easily open and extract attachments from winmail.dat files on your Apple devices. This app decodes TNEF files, allowing you to view and save hidden email attachments like PDFs and images directly to your device.
- Open winmail.dat / TNEF files
- Extract hidden email attachments
- Preview common file types
- Save or share attachments
- Works offline and on-device
- Supports iPhone, iPad, and Mac
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Winmail File Viewer & Opener lets you open winmail.dat files on iPhone, iPad, and Mac - and extract the real attachments inside. Some emails from Microsoft Outlook / Exchange arrive as a winmail.dat file (also called TNEF), which can hide the attachments you actually need. This app decodes the file so you can view its contents and save the attachments in seconds. Private by design: everything is processed on-device, works offline, and requires no account. How it works 1. Import a winmail.dat file from Mail, Files, or the Share Sheet 2. View the message contents and attachment list 3. Extract and save attachments to the Files app, or share them anywhere Key features - Open winmail.dat / TNEF quickly - Preview and extract common attachments (PDF, DOCX, images, and more) - One-tap Save, Share, or Copy - Works across iPhone, iPad, and Mac - Lightweight interface designed for fast access If you regularly receive emails with missing Outlook attachments, this is the easiest way to open winmail.dat and get your files back. Privacy Policy: https://www.winmailviewer.com/privacy Terms of Use: https://www.winmailviewer.com/terms EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Msg Viewer Pro
Easily view and manage Microsoft Outlook .msg, .oft, and .eml files, along with winmail.dat and .mht formats. Access messages, notes, contacts, and attachments with a simple, fast interface. Share, print, or preview files directly from your device.
- 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
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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
Screenshots
Verdict
The clearest difference is price: Winmail File Viewer & Opener at Free against Msg Viewer Pro's $4.99. Winmail File Viewer & Opener also leads on ratings volume (86 vs 4) and update cadence (every 3 weeks vs every 2 months). Msg Viewer Pro's advantage is in-app purchases (none vs 8) and review sentiment (69% vs 57%). On rating, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Winmail File Viewer & Opener is free to download; Msg Viewer Pro costs $4.99 up front. Winmail File Viewer & Opener sells 8 in-app purchases, starting at $3.99 per 7 days. Msg Viewer Pro asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.1 for Winmail File Viewer & Opener against 4.0 for Msg Viewer Pro. That said, the two scores are not equally well evidenced: Winmail File Viewer & Opener has 86 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 57% of Winmail File Viewer & Opener's written reviews are positive against 69% of Msg Viewer Pro's.
Winmail File Viewer & Opener ships an update every 3 weeks, Msg Viewer Pro every 2 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Winmail File Viewer & Opener | Msg Viewer Pro |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.1 (86 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 56.9% of reviews | 69.0% of reviews — better |
| Number of ratings | 86 — better | 4 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | An Sinh Pham | 群群 刘 |
Customer experience
Winmail File Viewer & Opener
Msg Viewer Pro
User reviews
Winmail File Viewer & Opener
From 86 App Store ratingsWhat we love
- 🚀 Easy to use
- 👍 Solves a common problem
- 💡 Useful for business users
- 🚀 Works as advertised
- 👍 Great customer service
Room to improve
- 🐛 Doesn't work with some file types
- 💰 Requires payment for extended use
- 🐛 Compatibility issues with newer iOS versions
- 🐛 Crashes or doesn't open files
Msg Viewer Pro
From 4 App Store ratingsWhat we love
- ✅ 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
Room to improve
- 🐛 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
Bugs and requests
Winmail File Viewer & Opener
Reported bugs
3 issues- Crashes when opening certain files
- Blank screen or no content displayed
- Compatibility issues with iPhone 4S and iPad
Requested features
3 requests- Ability to view and edit files
- Improved file format compatibility
- Automatic updates for new iOS versions
Msg Viewer Pro
Reported bugs
11 issues- 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
Show 6 moreShow fewer
- 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)
Requested features
9 requests- 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
Show 4 moreShow fewer
- Better inline image handling
- Modern toolbar icon design
- Settings to control image embedding behavior
- Support for additional document formats
In-app purchases
Winmail File Viewer & Opener
- Unlimited (Weekly) - 20% Off!$3.997 Days
- Winmail Unlimited (Weekly)$4.997 Days
- Unlimited (Monthly) - 30% Off!$6.991 Month
Show 2 moreShow fewer
- Winmail Unlimited (Monthly)$9.991 Month
- Winmail Unlimited (Annual)$59.991 Year
- Decode 10$4.99
- Decode 30$9.99
- Decode 100$29.99
Msg Viewer Pro
No in-app purchases
