OST to PST Migration - Version 3.1 OST to PST Migration Software is an email migration tool and OST Recovery Software to recover emails from OST file with all email components including emails, contacts, tasks, calendar, notes, journals etc from inaccessible or not working MS Exchange OST file them convert into MS Outlook PST file. When MS Exchange server goes down then recover data for OST to PST conversion software perfectly helpful tool for converting OST file to PST file.OST to PST Migration Software successfully transfer selected OST mail older to Microsoft Outlook. Convert OST to PST Software recovers all the emails, contacts, tasks, notes, calendar, journal etc. from Microsoft Exchange Offline Storage (OST) files created using Microsoft Exchange 5.0, 5.5, 2000, 2003, and 2007. OST to PST Migration Software has nothing to do with the corrupt OST files, Software just convert OST files to MS Outlook. You can purchase full version of our software just at $99. For more info:-http://www.ostconversion.net