The ost conversion method is really easy with ost to PST converter, and you can do it transfer all your Emails, Contacts, Email attachments, etc. along with you can import ost to pst file and also open ost file to pst file through outlook ost file converter software. It is the right way to import ost to PST, Office 365 account, pst file, EML, EMLX, MSG, HTML, MHTML, MBOX, VCF, CSV, ICS, Live, Exchange Server, Zimbra, Gmail, Yahoo, and etc.