Free Outlook OST to PST Converter to fix corrupted Outlook OST file. Along with its tool to Convert file/folder from damaged OST to PST file by using batch option. Its app to conversion ost file to pst file with +20 file formats such as- pst file, Office 365 account, pst file, EML, EMLX, MSG, HTML, MHTML, MBOX, VCF, CSV, ICS, Live, Exchange Server, Zimbra, Gmail, Yahoo, and etc.