To import OST files into PST file format KDETools OST to PST Conversion tool is the best solution. This software has multiple features to convert OST data files into Outlook PST. The OST to PST conversion software provides a free preview of converted OST data before the conversion. This software exports OST mailbox into Office 365 and Live Exchange Server directly. The OST to PST Converter tool is able to recover and repair corrupted, damaged and password protected OST files. This software converts OST files into multiple file format like PST, MSG, EML, EMLX, MBOX and etc. This software exports OST contacts and calendars into vCard and vCal file formats.
For more:- http://www.ost-to-pst-free.com/