Convert Outlook OST to PST - Version 3.01 Some time convert Outlook OST to PST play most essential role to save Exchange OST file. To perform this task you need to try Exchange OST converter tool which is expert to convert Outlook OST to PST, EML and MSG file formats. With this tool you can convert Outlook OST to PST with entire email, calendars, contacts, task etc. The working process of this tool is too easy which any novice user can easily operate. Software support entire version of Exchange server as yet compatible with almost editions of MS Outlook. Try out free demo application that allows convert 5 OST items at a time. After using free demo version you can easily proceed to buy full version which is available at $99 only. Full version can convert complete Outlook OST to PST files with in few clicks.