If you are thinking of exporting NSF to PST files then use eSoftTools NSF to PST Converter Software. This tool is a solution to simply Export data from the Lotus Notes database to Outlook PST files with some Clicks of the mouse. This software will smoothly export entire emails, contacts, calendars, tasks, journals, and more to Outlook PST. And you also have the option to use a demo edition. In the free demo edition, you can convert your 25 NSF files into PST for free. And not only PST you can convert it into multiple formats.