To export or recover corrupt .ost file try "
OST to PST Converter" software which can easily recover corrupted/damaged data of Offline OST file and export OST to PST along with every emails properties Meta data to, cc, bcc, su bject, date and time etc. This tool solve out of any types of corruption issue from OST file and convert Outlook OST to PST, EML, MSG and HTML formats without any interrupt.
To download visit:-
http://www.tools4recovery.com/ost-to-pst-converter.html