Download sifo ost to pst converter software to convert all ost mailbox items using some simple steps this software is convert all corrupted and unmounted ost mailbox item in to eml file. Msg file, mbox file, html file, mhtml file and many other file format this software is convert all version 32bit and 64bit ost file. For more info visit this link https://www.sifosystems.com/ost-to-pst.php