OST to PST tool works well with most of the versions of MS Exchange Server, MS Outlook and Outlook Express such as MS Exchange Server 5.0, 5.5, 2000, 2003, 2007, 2010 and 2013 versions; MS Outlook 97, 98, 2000, 2002, 2003, 2007, 2010 and 2013 versions; Outlook Express 4.0, 5.0, 5.5 and 6.0 versions. The exchange ost recovery tool is incorporated with several feasible features.