Stella gives you OST to PST Converter software that is well easy solution to repair damage exchange orphaned OST file data and convert emails from OST database and save OST to PST file with such items of OST contact, calendar, journal, task, notes etc.
Read more:- https://www.stelladatarecovery.com/email-recovery-solutions/how-to-convert-ost-to-pst-in-office-365/