Download OST to Outlook Email PST - Version 4.3 Download OST to Outlook Email PST application program is the most helpful utility for OST users. OST to Outlook tool has the ability to convert mail messages with accurate particulars, fields and attachments in original format. Users can also recover damaged or corrupted OST to PST file. OST to Outlook PST application management tool is working as converter and recovery software to repair corrupted OST data and save them as PST, EML and MSG formats. Our suggestion is to try the demo version software and check out how the OST to PST software works on your OST file. As demo version clarifies the things to you and will convert first twenty five items free of cost. For converting more than twenty-five items, purchase full licensee version tool only paying at 99 USD.