Convert OST to PST Microsoft - Version 5.5 Best OST to PST converter is presented to user so they may get to know how to recover damaged data from Exchange Mailbox related OST file. Using this tool convert OST to PST file in multiple versions of MS Outlook like, Office Outlook 2010, Office Outlook 2007 and Outlook 2003 also support for 2002 and 2003. Do OST file to PST conversion to make OST file portable outside Exchange server. Not only convert OST to PST Microsoft but also convert OST to EML and MSG file using Outlook OST file conversion tool. This process will make OST file readable on Outlook Express, Thunderbird, Entourage and all other EML file supported formats. Outlook OST to PST conversion tool gives successful results to get the exclusive recovery of offline and orphan OST file. Also download free trial version of the software to get to know how to convert OST to PST file in Outlook. But free version is limited to show preview of OST