You can try eSoftTools NSF to PST converter software that converts  Lotus Notes NSF to PST. It can help to convert single as well as multiple NSF files in one time. NSF files of all versions of lotus notes are supported by the software including- 10.0.1, 9.0.1, 9.0, 8.5, 8.0.2, 7.0, 6.5 and 6.0. It will never change folder structure after conversion. You can export all data from lotus Notes NSF files including- Emails, Address book, Calendar, Task, Journals, and other items. You can try the demo version of the software free of cost.

Get more:- Convert NSF to PST with Lotus Notes