Try this most Powerful software of eSoftTools name as NSF to PST Converter Software which will allow you to immediately recover and convert all NSF files with all mailbox items to several unique file types such as- PST, EML, EMLX, MSG, HTML, vCard, etc. It is capable to recover lost database of corrupt NSF file (like- emails, appointments, journals, drafts, sent items, inbox-outbox items, and more). Try a free Demo version of this software from the given link that allow to make NSF conversion with selective 25 items free of cost.
Read more:- https://www.esofttools.com/blog/how-to-convert-nsf-file-to-pst-free/