Corrupt OST Recovery - Version 3.5 OST Recovery Software is a perfect solution to convert your Offline Storage (.OST) file in to Personal Storage (.PST) file. When the Exchange server gets down and corrupted due to server crash, accidental user account deletion, database corruption etc, the .OST data on the client's computer still have the mail messages and all other items of the mail account. OST File Recovery tool provides multiple options to save the recovered items in PST, EML or MSG format. Recover corrupt OST software convert password secluded OST File both encrypted or high encryptions. You can purchase full version of our software Corrupt OST Recovery just at $99.