OST PST converter is a competent solution to deal with situations, where OST file has become unusable due to Exchange server crash, mailbox deletion or user account deletion. It helps the user to extract all available email data from unusable OST file and save it to PST file. Even OST file that is password protected can also be converted to PST using OST PST converter. It recovers all mail messages, folders, posts, appointments, contacts, tasks, meeting requests, distribution lists, task requests, journals and notes available in the unusable OST file and saves them to PST (even in MSG & EML). To convert OST PST, it supports Exchange server 5.0, 5.5, 2000, 2003, 2007 and 2010 and MS Outlook 97, 98, 2000, 2002, 2003, 2007 and 2010. Its compatibility extends to MS Outlook Express versions 6.0, 5.5, 5.0 and 4.0. To help user understand the OST PST conversion process and software functionality, free demo version is also available. The demo version lets the user experience the process of extracting email items from unusable OST file and view recovered items. However, to save recovered items to PST, full version of OST PST converter is required. For more information www.ost2pst.org