If you are looking for an efficient solution to repair and recover corrupted OST files, I would recommend FixVare OST Converter. It can easily repair and recover damaged or corrupted OST files with zero data loss and data structure. This software is most efficient and reliable for recovering OST files; it offers to recover selective data instead of complete OST files. It has multiple features which make it easy to use, and to better understand, and provides a free demo version for all users.