To Convert OST to PST I would like to recommend use Softaken for OST to PST and export your OST emails, contacts, calendars, tasks, journals, etc. into Outlook PST format with 100% data recovery. The Tool is developed using advanced algorithm so it repairs all the corrupted, damaged or inaccessible OST files into PST format. The OST converter is a stand-alone tool to maintain the folder structure, also it preserves the inline images of the Outlook Offline Data files into PST files. To get more information about the tool visits its Official Website.