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Secure Server Parsing

Free PST Viewer
Open Outlook Files Online

Upload an Outlook .pst file and parse real folders/messages with a PST-native engine. Browse mailbox content in folder tree, email list, and preview mode.

PST-native parserFolder tree viewEmail previewNo Outlook required
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Drop your .pst file here

or click to browse

Get Started with PST Viewer in 3 Simple Steps

1
EMLMBOX

1. Upload PST file

Drop an Outlook .pst file to view its contents.

2

Processing... 0%

2. View in browser

Folders and emails are listed. Click to read.

3
Download

3. Browse folders

Navigate and read messages. No server upload.

About

What Is a PST File?

PST (Personal Storage Table) is Microsoft Outlook's format for storing email, calendar, contacts, and tasks in a single file. It is commonly used for mailbox export, local archive, and migration operations.

This free PST Viewer uses a PST-native parser in our API layer to extract folder hierarchy and email messages, then renders results in a familiar mailbox UI (folder tree, email list, and preview).

Use the viewer to quickly inspect mailbox data before migration, export validation, support workflows, and compliance checks without installing Outlook.

Features

Features of the PST Viewer

Inspect Outlook PST files with no install

PST-native parser

Uses pst-extractor on the server to parse real PST mailbox structure and message entries.

Folder tree navigation

Browse parent and child folders from PST hierarchy and select the exact mailbox path.

Email list pane

See parsed emails with subject, sender, and date in a clean list interface.

Message preview

Read plain text or HTML email body with sender/recipient metadata and attachment info.

Secure temporary processing

Files are parsed in the API runtime and removed from temporary storage after processing.

Works everywhere

Use on Windows, Mac, or Linux. No Outlook desktop app required to inspect mailbox content.

How to use

How to View PST File Structure Online

Four simple steps — no install, no sign-up

01
01

Open the PST Viewer

Go to the PST Viewer page and you'll see the upload area.

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02

Drop your .pst file

Drag and drop an Outlook .pst file, or click to browse and select one.

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03

Parse folder structure

The PST-native parser extracts folders and messages from your uploaded file.

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04

Browse emails

Open any folder, pick an email, and preview its message body and details.

Use cases

Use Cases for the PST Viewer

When and why to inspect PST files online

Quick format check

Open PST content and verify mailbox folders/emails before migration or archival.

Migration prep

Review mailbox content before migrating to another email system or cloud platform.

Support & forensics

Inspect mailbox content quickly for support and audit tasks.

No Outlook installed

Open PST files from any machine without installing Microsoft Outlook.

Developer inspection

Use parsed folder/email output during development and mailbox debugging workflows.

Backup verification

Check export files and verify actual message data before long-term storage.

Compare Plans

Free vs Paid — PST Viewer

Get started free, upgrade when you need more power.

Feature
Free
Paid
Daily usage
5 uses/day
Unlimited
File size limit
50 MB
200 MB (1 GB for All Tools)
All core features
No software installation
Works on any device
Files stay on your device
Batch processing
Priority support
Upgrade — starting at $6.99/mo
Upgrade to Full Version

Unlock the Full Power of PST Viewer

Remove daily limits, process larger files up to 1 GB, enable batch processing, and get priority support.

Buy Full Version — $6.99/moor $300/yr enterprise

File Viewers includes:

  • 21 file viewers included
  • Unlimited daily uses
  • 200 MB file size limit
  • All file formats supported
  • Email analysis tools

Also available in the All Tools Bundle

FAQ

Frequently Asked Questions

Common questions about the PST Viewer

Q1. What is a PST file?
PST (Personal Storage Table) is Microsoft Outlook's format for storing mailbox data such as email, calendar, and contacts in one file.
Q2. Do you upload my PST file?
Yes. PST files are uploaded to the parser API for processing and removed from temporary storage after parsing completes.
Q3. Can I see actual emails?
Yes. This viewer uses a PST-native parser (pst-extractor) to extract real folders and email messages for preview.
Q4. Can this open corrupt PST files?
Corrupt PST files may fail parsing. The parser can only process valid PST structures.
Q5. Is the PST Viewer free?
Yes. The tool is free to use with no sign-up and no limits.
Q6. What if parsing fails?
The file may be corrupted, password-protected, or non-standard. Try another PST export and re-upload.
Q7. Does it work on Mac?
Yes. The viewer works on Windows, Mac, and Linux. No Outlook required.
Q8. Can I view OST files here?
OST uses the same file structure as PST. For OST-specific analysis, use our OST Viewer tool which is tailored for offline data files.

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