I want to recommend you PassFixer tool because I am a happy user of this tool and used it for the last 1 month. It easily converts my NSF file data to PST. also many types of file formats are also inbuilt such as EMLX, MBOX, Zimbra, Yahoo, VCF, Gmail, MSG, EML, Office 365, HTML, and ICS. you can easily convert some important NSF file with email filtering option. With the live preview feature, you can easily check the preview of your NSF file before conversion. For more details check the free demo version of this tool from the official website of PassFixer.