I would like to suggest you eSoftTools NSF to PST converter software. This tool comes with a very simple and easy to understand interface. It also provides many types of different file formats to convert Outlook OST files such as HTML, Yahoo, Gmail, Office 365, ICS, MBOX, Zimbra, CSV, VCF, EML, and EMLX. It's also allow to migrate multiple Lotus Notes NSF files. Download the free demo version of this tool from the official website of eSoftTools.

Read more- https://www.esofttools.com/nsf-to-pst-converter.html