Try this Software Regain OST to PST Converter for Converting OST file to PST file. This amazing Software helps you to Convert Microsoft OST file data into PST, EML, EMLX, MSG, MBOX, vCard, vCal, Office 365 and Live Exchange Server account. this Software also Repair and Recover your Corrupted/Deleted OST file data with all emails items like emails, attachments, contacts, notes, calender and journals etc. You can also try this Software free trial version and In free version you can see the preview of all Convertible emails before saving.
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OST Database to Outlook PST Exporter is more than an OST conversion program which has been updated time and again. The tool has managed to export OST files to various file formats including PST, MSG, EML, EMLX, and MBOX.