stella ost to pst conversion software is the simple interface software to convert all ost mailbox items in to pst file this software is convert all ost mailbox items like emails items, contacts items, calendars items, task items and many other items in to office 365 account this software is convert all corrupted and unmounted ost mailbox items in to pst file this software is convert all deleted items ost mailbox items in to pst file by using three simple steps. This software is convert 32bit and 64bit ost mailbox  items. And install the windows operating systems 32bit and 64bit. For more info visit this link https://www.stelladatarecovery.com/ost-to-pst-converter.html