OST to PST Data Conversion Tool - Version 3.3 OST to PST Data Conversion Tool: OST database create on Exchange Server by all Microsoft Exchange Version (4.0, 5.0, 5.5, 2000, 2003, 2007 and 2010). OST files keep copy of every email on Exchange Sever, if Outlook User lost email by change in this time, user want to restore that particular email then use OST to PST Data Conversion Tool because OST file keep duplicate copy with help of this software convert OST data to PST data then user can easily open own email in MS Outlook. The OST to PST Data Conversion Software recover inaccessible Offline Storage Files (.OST) from Exchange Sever and effectively convert OST data PST data on all Version of Windows Operating System like Windows 7/Windows Vista / 2003 / 2000 / XP. OST Conversion Tool provides facility for user or client that use demo version after satisfaction of process and performance you can purchase full version at $99. For download and purchase online this software visits-:http://www.convertostpst.org