Open OST using OST PST Viewer software.

- Andrew Banks Rating: 4.8 - 101 reviews

I used OST PST Viewer to access a large old OST file. I was able to find the information I needed from some old emails, quickly using the search function. Using OST-PST viewer was that easy."

About 4Team Corporation,

the company behind OST PST Viewer

We are a Microsoft Gold Certified Partner and independent software developer and vendor. Since 1999 we have provided business solutions to our corporate customers and individual end-users worldwide. We are very proud to be highly recommended by our satisfied customers and offer award-winning support.

Open OST file and other OST PST Viewer features:

Open OST file in all Outlook versions

Opening OST file in Outlook 2007, 2010, 2013 or 2016 is easy. Simply open OST file in OST PST Viewer and save this data as PST file. Now you can open and view your OST data in Outlook.

Open OST files without Outlook or without Exchange

The OST file format is used by Microsoft Exchange. You can not manually open this file in Outlook. That’s why we developed OST PST Viewer. It enables you to manually open OST files created by any version of Microsoft Outlook without Outlook itself.

Open, access, browse, search OST files

Opening an OST file has never been so easy. With our program you can open, browse, search, view, read OST files. You can use this tool to access or open OST files on another computer without Outlook on it.