Export Outlook OST file to PST with eSoftTools OST Recovery tool. It comes with a very simple and user-friendly interface. It also allows the conversion of Lotus Notes NSF file to PST and many other file formats such as EML, EMLX, HTML, ICS, vCard, MBOX, Zimbra, Gmail, Office 365, Yahoo, and MSG. It gives you a live preview feature to see the inner elements of the NSF file before conversion. Use the free demo version of this tool and get 25 mailbox items from each folder.