OST to Outlook Converter- This is most resourceful utility for users who want to convert OST to PST including attachments. Professional OST Converter Utility has expertise to quickly convert OST to PST 2010, 2013 etc. It needs Outlook installation in PC. There are 2 options to scan files- deep scanning & quick, through the deep scan, tool scans all extremely corrupt OST files and grant to save .ost as .pst & more. It proffers preview of files.