You can take a third-party tool called eSoftTools OST to PST Converter software to export OST file information into a new usable Outlook PST file along with emails, contacts, calendars. attachments, images, links, deleted folder of Outlook Server. This OST to PST Converter tool allows you to move single and multiple emails and another folder of Outlook server into PST Outlook, EML, MSG, HTML, or EMLX.
Read more:- Export OST to PST files
stella outlook ost to outlook pst converter software convert all ost mailbox items in to pst file this software is convert all ost mailbox items like emails, contacts, calendars, task 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 this software is convert all large and small ost file data in to pst file. for more info visit this link https://www.stelladatarecovery.com/ost-to-pst-converter.html