SysTools OST Recovery - SysTools OST Recovery is a tool that is used for the recovery of inaccessible OST files of Exchange Outlook*. This data retrieval utility can provides you with the capability to extract messages, contacts, and calendars from corrupted, damaged, or orphan OST files and save them in other file formats. Key features include: Preview of recovered OST file data items. Two scan modes for recovering corrupted OST: Advanced