To recover the data from damaged OST file I suggest you ATS OST to PST Converter tool that is supportable to export more than one file in a safe manner. Using it you can transfer your data smoothly and easily into several interesting file formats such as PST, EML, EMLX, vCard, vCal, MSG, MBOX and HTML. It allows you to work in the absence of MS Outlook installation in your system. Before the conversion, you can see the preview of recovered mailbox along with emails, notes, deleted-items, drafts, outbox sent-items, contacts, inbox, calendars. It gives 30 days money back guarantee.
I want to say OST to PST Converter is the great software as this seems to be quick utility for me when I performed conversion of thousands of OST to PST format. Give a chance to this utility. I hope you will get successful results.