If you'd like to convert an OST data file to an Outlook PST file, you should use eSoftTools OST to PST Converter Tool Free Download, which has an advanced function that allows you to transfer an entire database and convert several PST files at once. Use the OST to PST Exporter Utility to convert mailbox data from an OST file to a PST file without errors. It can convert OST to PST, EML, EMLX, MSG, MBOX, OFFICE 365, GMAIL, and Yahoo, etc.
Get more info- OST to PST Exporter
Get more info- OST to PST Exporter