A few days back I tried lots of software to recover OST files then reset OST file in Outlook. I found the best solution is eSoftTools OST Recovery software. This tool can easily recover corrupted OST files and convert OST file into many other formats like PST, EML, EMLX, MSG, MBOX, OFFICE 365, HTML, MSG, etc. Using this application user migrate their all the data of OST mailbox like emails, sent-items, deleted-items, drafts, outbox contacts, inbox, calendars, notes (To, Bcc, Cc, Subject, From, Object, Date and Time) Into newly created Outlook PST file.
stella ost to office 365 converter software is the advance tool to convert all ost mailbox items in to pst file this software is convert all ost mailbox items like emails, contacts, calendars, task, notes and many other items in to office 365 account this software is support all version 32bit and 64bit ost file this software is convert all corrupted and unmounted ost mailbox items in to pst file. for more info visit this link https://www.stelladatarecovery.com/ost-to-pst-recovery.html