How to convert ost to pst in office 365 via eSoftTools OST to Office 365. See above information and get complete conversion process to convert OST file to PST file with all items of Exchange OST file.
And check out the details - https://www.esofttools.com/ost-to-office365-converter.html
And check out the details - https://www.esofttools.com/ost-to-office365-converter.html