You can successfully to recover from lotus notes to PST and can also export NSF to PST Outlook file by taking help of eSoftTools Lotus Notes to PST Conversion Software that allows users re-open NSF file after doing well conversion of NSF file data included - inbox items, outbox items, contacts, calendars, task, notes, inbox items, outbox items, journals and appointments and also restore Lotus Notes NSF file to PST, EMLX, MSG, HTML, EMLX, MBOX, and many more formats without facing any difficulty. NSF to PST Converter Software supports all MS Outlook versions included- 97, 2000, 2002, 2003, 2007, 2010, 2013 and 2016 and Windows versions up to 10.

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Before you can purchase any 3rd party tool for NSF to PST conversion, you should try an easy DIY trick. Since you can't import or export the NSF file to the Outlook client, you should convert the NSF file into any such format which is supported by Outlook. IBM Notes allows you to save the NSF file into two different file formats: Comma Separated Value and Structured Text. Both these file formats are supported by the Outlook client. After converting the NSF file into any of these formats, you can import the new file to the Outlook client. Refer to this article for complete information - NSF to PST Conversion - Migrate Lotus Notes to Outlook

And if the manual trick shared in the above article fails or doesn't work, then only you should consider using a 3rd party tool. There are many vendors in the online marketplace which provide NSF to PST Converter tool. But before you can purchase any such paid software, you must download the demo version for free evaluation. This article contains some useful information - Best NSF to PST Converter 2019 - Download Free Demo

I hope the shared information would be helpful here.

Thanks.