Look at this Atom TechSoft Outlook OST2PST conversion tool is a well-designed application that conducts Outlook offline OST file as conversion of all the emails with an attempt to save your time. It is a safe and fast solution. It recovers damage, corrupted and bigger Size mailboxes items from Outlook offline.OST files. Along with it has advance option for restore with save database from OST2PST(EML, TXT DOC, PDF, RTS MSG, HTML, MHTML, MBOX formats.) formats. It propose to fix offline .ost file and export OST File data in Outlook PST file formats
Read more :- http://www.atomtechsoft.com/ost-to-pst-converter.html