If you're having a problem converting OST files to PST format, you've come to the correct place. So great solution to restore ost to pst outlook format by using outlook ost file converter tool. Outlook OST export tool is the best app for recover damaged outlook ost file. Ost file Converter is a tool that converts ost files into a variety of formats- PST , Office 365 account, pst file, EML, EMLX, MSG, HTML, MHTML, MBOX, VCF, CSV, ICS, Live, Exchange Server, Zimbra, Gmail, Yahoo, and etc.