Free OST to Outlook - Version 3.3 The OST file is a type of backup copy of the user's mailbox on Exchange Server works as the data savior when Exchange Server gets damaged and corrupted, user's mailbox gets deleted, and user's Outlook profile gets corrupt making the OST file orphan and unreadable to Microsoft Outlook. Try best OST to PST tool restore all corrupt Ost files form Exchange Server OST files and user these new files save three formats as PST, EML and MSG. Supports OST files created with any version of MS Outlook and Exchange Server such as Microsoft outlook 2010, 2007, 2003, 2000 and 98 Microsoft exchange server 2010, 2007, 2003, 2000, 5.5, 5.0 etc. You can use our demo version available on our website at free of cost. As demo version clarifies the things to you, for purchasing the full version of this software you can download it online from the inks below and invest only $99 only to get more benefits. Also, support team is working 24x7 to assist you all round. More information: - http://www.exchangeostrecovery.org