If you are searching reliable tool for OST to PST conversion, then apply IbidInfo OST to PST converter software. This application simply fixes all issues of orphaned OST file mailbox and converts them into PST file. With utilizing this application you can recover all object of OST file like contacts, calendars, mails with attachments, tasks, notes, appointment, journals and draft. This tool is compatible with all versions of MS Outlook 2016, 2013, 2010 (32 and 64 bit), 2007, 2003, 2002, and 2000 and Windows OS.
Official Website: http://www.ibidinfo.com/product/ost-to-pst-converter.html