# PST Viewer - Email Reader — Open Outlook PST & OST Files

> Offline PST/OST email archive viewer and search tool for iOS devices. (iPhone/iPad app by 延平 陈.)

- Source: https://appshunter.io/ios/app/pst-viewer-email-reader/id6757521943 (this page in markdown: same URL + `.md`)
- Developer: [延平 陈](https://appshunter.io/developer/1833168926)
- Category: Productivity, Business
- Price: $7.99 with in-app purchases
- Rating: 5.00/5 from 5 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 20 MB
- Languages: American English, Arabic, Czech, Dutch, French (France), German (Germany), Hungarian, Italian, Japanese, Korean and 9 more
- Released: 2026-01-12
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pst-viewer-email-reader/id6757521943/reviews.md

## What is PST Viewer?

Read & search Outlook PST & OST files
Open and explore Outlook PST & OST email archives directly on your iPhone or iPad. PST Mail Viewer lets you browse folders, read messages, and search emails — all offline and on your device.

Pay once. Use on iPhone, iPad & Mac.
No subscription. No ads.

Key Features
• Open PST & OST email archive files
• Browse folders and subfolders
• Read email subjects, senders, recipients, and dates
• View email body content (plain text and supported formats)
• Search emails by keyword
• Preview and export attachments
• Works offline — no internet connection required

Privacy First
PST Mail Viewer processes PST & OST files locally on your device.
• No user accounts
• No analytics or tracking
• No data collection
• No server communication

File Access
The app uses the iOS document picker to let you select PST/OST files from supported locations such as the Files app or iCloud Drive. Access is limited to files you explicitly choose.

Important Information
• This app is not affiliated with Microsoft or Outlook
• PST/OST is a file format developed by Microsoft
• Performance may vary depending on PST file size and device capability

PST Mail Viewer provides a simple, private, and reliable way to access PST email archives on iOS.
Send feedback to: admin@yenpi.com

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

## Key features

- Open PST & OST email archive files
- Browse folders and subfolders
- Read email subjects, senders, recipients, and dates
- View email body content
- Search emails by keyword
- Preview and export attachments
- Works offline

## Pricing and in-app purchases

Base price: $7.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PST Viewer Pro | $7.99 | one-time |


## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/pst-viewer-email-reader/id6757521943/reviews.md

### 5/5 — Great PST File Viewer for Mac!

*2026-02-20*

It opens large Outlook PST files quickly and keeps all emails, folders, and attachments perfectly organized. The search feature is fast, and the interface is clean and easy to navigate. It’s reliable, efficient, and does exactly what it promises. Definitely a top choice for viewing PST files on macOS!

### 5/5 — Excellent PST File Reader!

*2026-02-20*

This PST File Viewer for Mac is absolutely fantastic! It made accessing my Outlook PST files on macOS incredibly easy and stress-free. The interface is clean, modern, and very intuitive—I was able to open and browse my archived emails within minutes.

The app handles large PST files smoothly without crashing or slowing down my Mac. I can easily navigate folders, search for specific emails, and view attachments with all formatting perfectly preserved. It feels just as seamless as using Outlook itself.

If you need a reliable and efficient PST viewer for Mac, this is definitely the one to get. Highly recommended for professionals and anyone managing archived Outlook data!

### 5/5 — best pst viewer

*2026-02-11*

good job

### 5/5 — works well！

*2026-02-08*

thanks for this quick and quality app！

### 5/5 — Clean, fast, and reliable!

*2026-02-04*

I needed to pull a few specific files from a years-old archive and didn’t want to deal with a full Outlook installation. This app worked perfectly.

### 5/5 — You saved me!!!

*2026-01-14*

thought I would never be able to read my 2018–2022 email archives again after switching to Mac+iPhone… until I found this app.
Thank you so much for making this – please never stop maintaining it

### 5/5 — Excellent tool for mobile PST access

*2026-01-13*

As someone who regularly needs to reference old PST archives on the go, this app delivers a stable and professional experience. Fast indexing, accurate rendering of HTML emails, proper handling of nested folders, and smooth attachment viewing. Very few iOS apps in this category reach this level of reliability. Highly recommended for business users and IT professionals.

### 5/5 — Best tool to view the pst files！

*2026-01-13*

modern ui，simple，work as expected！

## Frequently asked questions about PST Viewer

### What is PST Mail Viewer?

PST Mail Viewer is a mobile application designed to open, read, and search Outlook PST and OST email archive files directly on your iPhone or iPad. It allows you to browse through your old emails and attachments offline.

### How much does PST Mail Viewer cost?

PST Mail Viewer is a paid application priced at $7.99. The purchase is a one-time payment and grants you access to use the app on your iPhone, iPad, and Mac.

### Does PST Mail Viewer have ads?

No, PST Mail Viewer is ad-free. The app explicitly states 'No ads' and is designed to provide a clean user experience without interruptions from advertisements.

### Can I use PST Mail Viewer offline?

Yes, PST Mail Viewer is designed to work completely offline. You do not require an internet connection to open, read, or search your PST and OST email files once they are imported into the app.

### What devices is PST Mail Viewer compatible with?

PST Mail Viewer is compatible with iPhone, iPad, and Mac devices. The single purchase allows you to use the application across all these supported platforms.

### How does PST Mail Viewer handle my data privacy?

PST Mail Viewer prioritizes user privacy by processing all PST and OST files locally on your device. It does not collect any user data, use analytics, or communicate with any servers, ensuring your email archives remain private.

### How often is PST Mail Viewer updated?

PST Mail Viewer was last updated on March 17, 2026, indicating a recent commitment to maintenance and potential improvements. The latest version available is 4.0.

### Is PST Mail Viewer affiliated with Microsoft?

No, PST Mail Viewer is not affiliated with Microsoft or Outlook. It is a third-party application that works with the PST/OST file format, which was developed by Microsoft.

## Version history (last 5 releases)

### 26.6.0 — 2026-06-08

- Included general reliability and compatibility improvements.

### 6.1.0 — 2026-05-14

- Fixed text encoding issues that could affect French, Thai, and other non-English email content.
- Included general reliability and compatibility improvements.

### 6.0.2 — 2026-04-26

- Performance improvements and stability enhancements.
Thanks for your feedback!

### 6.0.1 — 2026-04-25

- Performance & Stability: Improved speed and reliability

### 5.0 — 2026-04-11

- Performance & Stability: Improved speed and reliability

## 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)
- [MSG Viewer - Email Opener](https://appshunter.io/ios/app/msg-viewer-email-opener/id6758084152)
- [Winmail.dat Viewer & Opener](https://appshunter.io/ios/app/winmaildat-viewer-and-opener/id6758431753)

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

## Related topics

[pst reader](https://appshunter.io/ios/topics/pst-reader)

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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.*