Lotus Notes NSF to PST format can be converted by using the SysInspire application and then you can open the NSF file. After the conversion of the files, it becomes quite easier to open the file in Outlook version.
Not only in pst but also the files can be saved in other layouts like the yahoo, Gmail, etc.
Just you have to install the application on your desktop.
Then you will have to operate the Free NSF to PST Converter on the desktop.
Now browse the files and add the required Lotus notes. After that option to check the preview NSF mailbox will be displayed on the screen.
Select the export to pst option and choose the desired items to export.
Then you can check on the ongoing technique.
There can also be the selective conversion of items and all the email properties will be maintained properly like To, CC, Date-Time, Subject.
More info:- Converter NSF to PST