PassFixer OST to PST Converter is an advanced technology tool with lots of helpful features such as multiple naming options, mass conversion, recovery of damaged OST files. This tool can easily convert Outlook OST files to PST, HTML, MBOX, EML, EMLX, Yahoo, Gmail, Office365, Zimbra, vCard, ICS, CSV, etc. it can also break a large number of PST files into smaller formats. It can run with all versions of MS Outlook or Exchange Server. Take the demo pack of this tool before purchasing it.