free ost reader

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OST File Viewer Software

Utilize A Complete Free Solution to View OST File Email Messages Without Outlook

  • The tool fixes minor corruption issues while scanning OST files.
  • Preview all mail components including Emails, Contacts, Tasks and Calendars etc.
  • 7 different view modes to analyze OST file email messages in depth.
  • You can also view Attachments linked to the emails you are reading.
  • Standalone OST file viewer ¬†which does not require MS Outlook or Exchange server.

What Makes It So Demanding?

Check Top Qualities of OST Reader

OST is a file format which can not be viewed or accessed without Exchange server environment. In this situation, most of the users start inquiring how to view OST files without Outlook. We have developed an independent OST file viewer tool which is totally free and well suited for the query. The tool offers several helpful functions for opening OST files and reading its content freely according to the requirement.

Export Selected Items

View All Mail Components

Not only emails, the tool scans selected OST files and view entire content, including emails, contacts, notes, tasks, calendars and journals etc.

Meta Data OST File Viewer

View Meta Information

The best thing about the free OST file viewer software is that the entire email properties are maintained properly and can be viewed within the email.

Preview Attachments OST File

Open Email Attachments

The OST file reader program is also capable to analyze and view email attachments which will make sure what information has been attached in an email.

Scan OST File

Forensic Analysis of OST File

You can also use this OST viewer application for the purpose of email analysis because the tool help to search & previews emails in different views.

Check How to View OST File Using The Tool


The OST reader program is intended with a simple UI so everyone can use this software for opening OST file without Outlook individually. Still, you have any doubts related to the OST viewer tool, then download and install the software on your PC and try it by yourself. A few easy steps are also shown here, which may be helpful to view OST file contents.


Install OST File Viewer

Install and Open OST Viewer


Add OST File you want to view

Add OST File you want to view


Read Email Messages of OST File

Read Email Messages of OST file


Dual Mode OST File

Dual View Mode

Compare Editions

OST File Viewer Tool — Free and Pro Version

  Free OST Viewer   OST Viewer Pro
Add OST Files  
Preview Emails & Attachments  
Diffrent Views to Analyze Emails  
Export Messages To PDF  
Technical Support Limited   Premium

Free OST file viewer


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Satisfaction Guaranteed


I was unable to read my office emails at home from OST file due to lack Exchange Server environment. But this OST file viewer tool really worked for me, now I am able to access messages from everywhere. Thank you so much!


I got the exact solution which I was searching from past a few days. The OST reader tool really surprised me when I saw that It worked like a charm for me. Thank you guys for such a brilliant effort.


I was not aware about this utility, but my friend suggested me to try this OST file viewer which I found really good. I think this is the best solution for those who wants to read corrupt or Orphaned OST file emails.

BRYANSan Marino

We are thankful to the team for providing such a great software solution free of cost. It also has ability for opening OST file without Outlook in different views. Our company used this tool for analyzing corrupted OST file messages and it perfectly worked for us.