It has been seen in many cases that the OST file stops working in Outlook or the file gets erroneous. In this case, the user sends his data from Outlook to another email client like Lotus Notes, but that too is unable to support the file. At that time, the OST to NSF Converter software is used. This eSoftTools OST Converter software helps you completely recover the file and it is also very easy to use.

More info - OST to NSF Converter