Free OST to PST Converter Features

Offline OST to PST Conversion

The OST to PST Converter exports OST to PST in offline mode. It accesses all OST files on the system without the original Exchange profiles or an Exchange Server connection and then converts to PST. Even orphaned or damaged OST files can be converted to PST.

Search & locate OST files

The Search feature of this free tool helps to find all the OST files available on the system. For conversion, you can just select the required file from the list displayed by the tool. This basic feature is for all users

Complete Preview for FREE

This free OST to PST Converter is like an open source tool when it comes to the preview feature. The entire OST mailbox data—emails, contacts, calendar, etc.— can be previewed. And in the case of damaged OST files, all recoverable items are displayed for preview.

Saving to Exchange, Office 365, Thunderbird, & Gmail

This freeware utility can be upgraded to get many advanced OST saving options like Exchange Server, Office 365, MBOX, and web mails. So this utility is suitable for Exchange administrators as well as home users.

Analyze the OST File Content

This tool provides four types of OST File Analysis Reports for free: Total item types on the OST file, Mail flow density by date/users, and interaction between any two different users. The content of the entire OST file or selected mailbox folders can be analyzed this way.

Search, find, & save emails

You can fetch essential emails from even from very large OST files, just by providing a few search criteria like From, To, Subject, Date range, or Attachments. The items then can be previewed and saved to the desired formats/destinations.

Convert OST to PST Free

Export 25 items free from each folder of OST to Outlook (PST), Outlook Express (DBX), MSG/EML, TXT, HTML/MHTML formats. And for OST files up to 500 MB size, we offer free conversion from OST to MBOX (Thunderbird), DBX (Outlook Express), PDF (Adobe Reader), EML/MSG, RTF/TXT, HTML/MHTML, & PST (Outlook) formats.

Export OST to PST in Outlook 2003 & later

This free tool exports OST to PST of Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007, & Outlook 2003 versions.
You simply can import the PST file to any of these
versions of Outlook.


Do I need to give credit card details for downloading this tool?

No. You need not even provide your personal information for downloading the tool. The trial version is free for all and you can get it just by clicking the Download button on our site.

Can I back up my mailbox without Exchange administrator’s involvement?

The OST to PST Converter is designed keeping the end users in mind. You can back up your mailbox to PST file on your end without any involvement of Exchange administrators.

I am using Thunderbird on my personal system as it is free. Can I export my official emails from my Exchange account to Thunderbird using this tool? I don’t want to disturb my Exchange administrators for this simple task.

You can export your official emails from OST files to MBOX format using this tool. You can perform it yourself without any help from Exchange administrators (however, make sure that your company policy allows you to do this).

OST files are on client systems. But why this tool has options to save OST files to Exchange Server, Office 365, etc.?

Exchange administrators can use this tool after Exchange disasters to restore user mailboxes to a live Exchange Server or Office 365. Only thing is that they have to collect OST files from the client machines.

Comments (74)

First < 1 2 3 4 > Last
Damon says...
While using Outlook, an error was displaying "Cannot start MS Outlook." Luckily, I got to know about this tool and was able to fix OST file issue. Hats off to its user-friendly interface.
27th October 2017 7:24pm
Winifred says...
Wonderful experience with OST to PST tool. I have worked with many tools being a part of an IT organization. Well, I noticed that this tool provides the best of the solutions for any sort of problems. It allowed me to easily convert inaccessible files to PST within few minutes.
18th October 2017 4:06pm
Harry says...
My Outlook stopped responding due to size limit issue and I was not able to access my emails. However, this OST to PST recovery tool made it easy for me to convert the data into multiple PST files.
13th October 2017 3:02pm
Dominico says...
OST to PST conversion is the most cost effective way for backing up user mailboxes. I use it to back up the mailboxes of Employees leaving from our organization. It's a nice tool.
5th October 2017 3:03pm
Beverley says...
I don't think free tools can help in OST to PST conversion when Exchange is down. The OST to PST is the best tool for this.
27th September 2017 3:48pm
Sedeco says...
It is a simple tool in every sense - easy to install and easy to use. I used it to carry my mailbox data (as a PST file) with me as I moved from my London office to New York office.
21st September 2017 9:26pm
Walstan says...
I am using the tool, the tool has intuitive user interface and easily repairs and converts OST data in Outlook PST format.
15th September 2017 6:47pm
Piaw Stewart says...
After trying various other applications, I must say this is the best among all and meet my requirements to a great extent. Best highlight of the tool was its ability of a creation of file Analysis Report that allowed me to grab a detail information about Mail flow density by date, Total item types, Interaction between users, and Mail flow density by senders.
4th May 2017 4:23pm
Charles says...
Frankly, it is one of the best in market tools that help in the complete repair and recovery of any sort of inaccessible OST files. It also helps to convert them to PST format for any further needs.
13th April 2017 6:30pm
Jeck says...
The tool works exactly as shown in the demo version. It is very easy to use and does not require any professional or prior knowledge of software. I would rate it 5 stars and would recommend to anyone who need to repair OST files.
6th April 2017 6:11pm
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