OST Viewer Tool

OST Viewer: Freeware Tool to View OST Files

Buyer Rating : star icon (Average Rating 4.1 Based on All Reviews)

OST viewer tool is free software which lets you view the items stored in OST file in the absence of Exchange server as well as MS Outlook. This tool is perfect to open the files which have become inaccessible due to any reason.

Features of OST viewer

  • It works without the connectivity to Exchange account/MS Outlook
  • It lets you view all OST file content such as emails, attachments, Deleted items, Calendars, contacts etc.
  • Works perfectly with damaged as well as corrupted files
  • Let’s you find a particular OST file
  • Works efficiently with all Windows Operating system
  • It allows you to open heavy files in no time.

*Download free demo to convert and save 25 emails per folder right away.

OST Viewer Tool: What Is it Used for?

The OST viewer tool is a desktop-software that lets you view the inaccessible OST files. The sudden file closure, power failure, virus or malware, and data synchronization errors can cause OST file corruption which makes the OST files hard to reach. This is when OST viewer tool comes to the role. It lets you view the data stored in the OST files.

This tool is used in the below-given cases:

  • Viewing the Exchange mailbox items in the absence of profile/connection.
  • Accessing orphan, corrupted, healthy OST files without Outlook
  • Sort the data using Date, CC, from, To etc.
  • Opening attachments of OST file emails
  • Generating an analytical report for the data stored in OST file.

Salient Features of OST Viewer

Preview Multiple OST File

Preview Multiple OST file

Using this OST viewer tool, you can access bulk emails at once. Moreover, you can get the preview to all messages available in the inbox including attributes like From, Subject, To, Sent, received date and file size.

Locate OST File

Locate OST file

Using this tool, you can search for a particular OST email from the disk with attributes like “to”, “from” and “subject”. This tool makes it easy to search for a particular file and saves your valuable time.

Password Protected Files

View the password-protected files

Users can get the preview of encrypted files. Password –protected files can be opened with ease using this effective OST viewer tool. It lets you view the encrypted files without affecting the data stored in it.

Generate File Analysis Report

Generate a File analysis report

You can create an analysis report for the file you are viewing. The file includes all the included items namely emails, notes, contact, embedded-links and more.

View Email Attachments

View email attachments

Using this comprehensive piece of software, you can get a view of the attached items with your emails. All images, files, documents, and media stored on your OST file can be viewed without any halt.

Preview Large OST Files

Preview large OST files

Even the large OST files can be viewed using this tool. The software is capable of dealing with massive OST files as this tool has no size restriction.

User Friendly Interface

User-friendly interface

The product includes an intuitive interface which is easy-to-operate. The neatly organize layout lets the users view their OST file without any hindrance.

View All Attachments

View all attachments

OST viewer tool will let you preview the attached elements using the in-built viewer. You can get access to attachments such as Image, documents, files and other elements.

Software Support

Software support

OST viewer tool offers support to all the latest as well as old versions of MS Exchange Server (2016, 2013, 2010, 2007, 2003, 2000, 5.5, and 5.0), MS Outlook (2016, 2013, 2010, 2007, 2003, 2002, 2000, 98, and 97), and Windows OS (10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, and 95).

Upgrade OST Viewer to OST 2 PST Converter
Don’t limit yourself to preview, but save unlimited OST data using OST to PST converter. Try your hands or demo version first.

Software Screenshot

Software Review

Since the inception of this software to present day, users analyzed the product in performance-related terms and rated it 4.1/5. The 4.1 rating indicates the excellent functioning of the product so far.


4.1 average based on 54 reviews.

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Have You Purchased This Item?

If you are using this tool, don’t forget to write a descriptive review. This will help us to optimize the product, achieve the no-fault goal, and serve you with the best we can.


Review first


I recommend this tool to every user who is searching for a free OST file viewer. I have used this to view the corrupted OST files and this worked well for me. It is free to use and this is what attracted me the most.


Review Second


I was searching for a tool to view data from an old and corrupted OST file which I was unable to open for a long time. This tool helped me view all the stored data in one go and hence I highly recommend this tool to every user, as it costs nothing.


Review third


I am very picky especially when it comes to my personal data as I am a very concern about my privacy. But I can say this tool is must-to-say even if you want to view your crucial data.


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