Ost to pst migrate tool is the one very famous tool to migrate all the ost file data in to pst file. stella ost to pst migrate tool migrate all the ost file data in to office 365 account. Stella ost to pst migrate tool migrate 32bit and 64bit ost file data. Stella ost to pst migrate tool migrate unmounted ost file data in to eml file, msg file, mbox file and pst file. this tool can be migrate 32bit and 64bit ost file data in to pst file. for more info visit this link.
https://www.stelladatarecovery.com/email-migration/ost-to-office-365.php
