You can also use a manual or a third-party tool like the SYSessential Lotus NSF to PST Converter Tool to convert NSF to PST. This solution can also convert NSF files to PST or other file formats like EML, EMLx, MSG, HTML, MHTML, MBOX, and others. The application works with all versions of Outlook, including Outlook 2019, 2016, 2013, 2010, and others.
1. Download the tool and run it on your device.
2. Open the tool.
3. Click on the Add Files option.

4. Choose the NSF files to be converted to PST format.

5. Click on the Export button to start the conversion of IBM Lotus Notes NSF to PST.

Converting an NSF file to a PST file:
1. Download the tool and run it on your device.
2. Open the tool.
3. Click on the Add Files option.

4. Choose the NSF files to be converted to PST format.

5. Click on the Export button to start the conversion of IBM Lotus Notes NSF to PST.
