The software which can help the Exchange OST users to export OST to PST outlook is by using a tool like Sysinspire OST to PST Export software. This tool gives an interface to the customer to see all the stuff which is accessible in the mailbox. A free demo variation is furthermore offered to users for evaluate the capability of the software. This tool can restore the OST mailbox without distorting the file structure. A free demo interpretation is similarly offered to each customer with assistance to all forms of OST and Windows OS.
More info:- https://www.sysinspire.com/blog/how-to-convert-ost-to-pst-manually/