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4n6 Software
PST File Viewer

Easy-to-use PST Viewer Tool to Read PST files without Outlook Application

Software Rating (Average Rating 4.9 Based on 1446 Reviews)

  • Supports to View All Outlook Data Files : PST, OST, NST, BAK, and ZDB.
  • View Multiple PST files without Outlook At Once with PST Viewer Tool.
  • PST File Reader Successfully Supports 32-bit ANSI and 64-bit UNICODE PST.
  • View PST File Emails, Attachment, Contacts, Calendar, Notes and Tasks.
  • PST Opener Software Automatically Detects Data from Configured Profile.
  • Open PST File Content, Headers, Raw Messages, Hex View, and Properties.
  • Advance Search Options to Search Evidences Among and within Multiple Emails.
  • Free of Cost PST Viewer Software to Open and Read Unlimited PST Files.
  • Portable Edition for Investigators to View Outlook PST Files on Any System.

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Best PST File Viewer Tool

Rated as Best PST File Viewer

Simple UI to View PST Files without Outlook

PST Viewer Software is the most reliable and high-rated application by IT users. The software has a very simple graphical user interface. So, it is very easy to view unlimited number of PST files using this program. You can use it without difficulty even if you are a non-technical person who has never used a file converter or viewer solution before. Also, to view PST files, you just have to follow some simple steps like:

  • Free Download PST Viewer Tool and Run it on Windows Computer
  • Click Open Tab and Select the Option "Choose File from a Folder"
  • This Application Will Quickly Load Your PST files on the Left Panel
  • Click on Loaded PST and Preview PST file content, headers, etc.
Deeply Check PST Files

Preview All Data with Free PST File Viewer in Deep

It is the best PST Reporter Tool to view PST files without facing any type of hassle. Both IT users and forensics investigators can benefit greatly from our PST File Viewer Tool. The program gives a complete preview of Outlook PST files, allowing users to thoroughly evaluate the entire data set. This software allows you to preview data from PST files including:

  • Outlook Emails – Content, Properties, Hex View, Raw Message, and View Email Headers from PST Files
  • Contacts – Contacts Content (Personal Details, Photo Notes, Other Details), Properties
  • Calendar – Content (Subject, Location, Start & End Date, Time), Properties
  • Notes – Content & Properties

Main Features

Amazing Features of PST File Viewer Software

View Multiple PST Files in Batch

PST Viewer Forensic Tool is Windows software that allows investigators to open , View evidences within multiple PST File (ANSI & UNICODE) at a time. Along with PST Files, it allows you to open other Outlook data files such as OST, NST, BAK & ZDB. Ctrl option in software allows to open different Outlook data files in New Window. This PST File Viewer provides two option to browse PST Files as per the requirements.

Preview Outlook Data Items Deeply

Outlook PST Viewer software has inbuilt message viewer. Using PST file viewer, you can check suspected backup PST / configured Outlook PST emails with attachment, contacts, calendar etc. Also, the application is completely tried and tested. You will not face any type of issues while opening Outlook PST files. So, if you are looking for the perfect and trustworthy software to open PST files, simply download the app and start using it.

In-depth Preview of Outlook PST Files

With the help of Forensics PST Viewer, users can easily open Outlook data files without MS Outlook application. This PST file viewer tool provides the complete preview of email header as well as Hex View. It will help you to carefully view email messages & track the evidence hidden in it.

For instance, When a message is received or sent in Outlook, header information is crucial for an investigation as it contains information regarding the sender & receiver such as Delivered-To, Received-By, Received: from etc . All these field contains major details like IP Address of Host & sender, SMTP Id, Date & Time.

Open PST Files With / Without Outlook

PST file viewer is an amazing PST reader tool that lets users to instantly open PST files without installation of Microsoft Outlook. Also, the tool successfully supports PST file created in all Outlook versions 2000, 2002, 2003, 2007, 2010, 2016, 2019. This software provides two option to browse PST Files:

  • Open Configured Outlook Data Files: The software automatically detect and load all the PST files into the software panel. Now, you can preview content, headers, and other details easily.
  • Choose from a Folder: This feature is added for those people who do not have Outlook application. With this, they can manually browse and view Outlook PST files.

Search Evidences within Outlook PST

Search bar allows to filter & track data with certain evidences Search can be exceptionally valuable component as it can wipe-out the manual task to look for specific proof inside each mail. All you need is to search for your evidence in PST Reader Tool that you are looking for & tool will filter out from thousands of emails & highlight the searched keyword. You can also search by Date, Search by Time, and more.

Advance Filters & Search Option

By using this best email forensic software, the user can effortlessly find or search for specific word or text content in emails data items. This email forensic wizard provides additional option to search for related types of messages such as emails, contacts, calendars, tasks, notes, or many more. It is 100% safe and secure utility to view Outlook PST files without facing any type of issues.

View & Save PST Attachments

With PST file Reader software, users can easily view attachments embedded within each Outlook email in PST files. When you right-click on attachment, the tool gives you three options such as Open, Save, and Save All. Using this options, users can easily open or save PST attachments. If you want to save multiple attachments, then choose Save All option.

2 Edition of Forensics PST Viewer

The 4n6 PST File Viewer Tool is offered in two editions:

  • Portable Edition : It can be launched directly via USB / flash drive or any removable file. It helps the users to work with the software without installation. During the forensics investigation it enables to easily view the PST file data
  • Installer Edition : It needs installing the application files onto the system along with shortcut & uninstaller etc.
Simple and Tested PST Viewer Tool

4n6 PST File Viewer is a fully proven application to view Outlook PST files. You will never lose your PST file by using this advance and trusted application. It also has a very simple graphical user interface. All types of users (technical and non-technical) can easily use this app without any issues. So, simply download the app and view PST files in easy 3 steps.

PST Viewer Software for Windows

4n6 PST file viewer software is the most reliable and accurate software available for all Windows users. This application is completely Windows based. This amazing software can be easily downloaded, installed and used on Windows 11, Windows 10, and below. So, if you need to read unlimited PST files, use this advanced software to get a preview.

Maintains Originality of Outlook Files

4n6 Free PST Viewer tool always manages the hierarchy and data integrity of Outlook PST files. Even after viewing PST file items, it does not cause any harm to your data and maintains the originality of your data perfectly. This amazing application is free to use to view and scan unlimited PST files with just a few simple clicks. .

No Limitations on Outlook PST File Size

This advanced PST Viewer Tool for Windows has no file size limitations. This perfect PST File Viewer App allows you to open PST files of any size smoothly. Additionally, this tool allows you to easily preview large PST files without installing Outlook. You can easily preview any Outlook PST file without changing the speed.

Software Specifications

The PST Viewer Tool Software Specification

Software Download

Size : 5.0 MB

Version : 4.2

System Specifications

Hard Disk Space
131.1 MB of free hard disk space

Minimum 2 GB RAM

Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Processor

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008

Electronic Delivery

The delivery of the product is automatic. After the payment has been completed, you will receive an email containing the product download link and activation key within minutes.

Software Screenshots

PST Forensics Viewer Software Working Steps
run pst file viewer
load pst files
loaded pst files / folders
preview outlook pst files


Video Tutorial of PST File Viewer Application

User Reviews & Industry Recognitions

Awards & Reviews
CNET Reviews and Award

As reviewed by Cnet, the 4n6 PST Viewer stands out as the premier solution for consistently ensuring the security of your PST files. This remarkable software empowers users to conveniently access and view multiple PST files, all without the hassle of having to install Microsoft Outlook on their systems.

SOftware Informer Reviews and Award

The PST File Viewer, developed by the company 4n6, has received best ratings from Software Informer. It's not just useful for one type of user, but many different people and organizations find it helpful. This includes regular individuals, businesses, and especially forensic investigators who study digital evidence.


Comparision of Free & Pro Version


Free Viewer

Viewer Pro

View PST Email Content

Auto File Scanning

View PST Attachments

Advance Search Option

Export Unlimited Emails



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Frequently Asked Questions

Follow these simple steps to view Outlook file in Windows:

  • Step 1: Download & Run PST file viewer Wizard Installer / Portable Edition
  • Step 2: Click on “Open Configured Outlook Data Files/Choose from a folder “to upload emails
  • Step 3: This application will load your PST files on the left panel.
  • Step 4: Click on the select files and choose Hex View tab to open your PST files.

Yes, with PST viewer, you can view details of a header in Message Header View which provides all the crucial information while sending an email like Ip Address of sender & host name, SMTP Address, Routing information.

Yes, Now you can absolutely view PST file even though you don’t have Outlook. 4n6 PST File is capable to read Outlook File even in a system which does not have Outlook environment. All you need is to carry the portable version of this PST Reader software with you in a pen drive, which you can use it to view Outlook PST files in any computer.

Yes, the PST file viewer utility offers search options. Using search functionality, you can easily filter PST emails sent by a particular person name or email address.

No, the tool only allows you to view PST files. To export PST files, you can take the help of 4n6 Outlook Forensics Wizard.


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