You can use another migration tool If want to convert OST file in various file format. Our migration tool first allows recovery of damaged OST files then lets user save them PST, MSG, DBX, EML, MBOX and Archive file formats. To see full details how to convert or recover OST saved emails, messages, contacts, calendars, appointments and other data items visit: http://recoveryandmanagement.com/repair-ost-and-convert-into-pst-outlook/