Download Free - Reliable OST repair utility is a useful application for the users who repair the OST file and also converts into PST/MSG/EML file format. OST repair tool converts all email messages in a plain Text, RTF and HTML format. This software repairs the heavy OST files and it supports all the MS Outlook versions like - 2013, 2010, 2007, 2003, etc. Restore OST to PST software support the Windows 8 and all below versions.