If you are looking for a solution to recover email data from unusable OST file, then Restore OST tool can help you out. This Kernel for OST to PST software deals with crucial issues like virus attacks, jet engine errors, hard drive failure, or software crash, etc. It renders the recovered email items in the tree like hierarchical structure and provides multiple saving options, such as TXT, RTF, HTML, PDF, DBX, MBOX, MSG, EML, PST, and MHTML.