If your NSF file has emails that were deleted or lost, you can recover them using a specialized tool that reads all data, including deleted elements.

eSoftTools NSF to PST Converter Software includes a built-in recovery engine that restores damaged or deleted NSF mailbox items and allows saving them into PST or other accessible formats. This helps users retrieve lost emails without complex manual steps.

Know More - https://www.esofttools.com/blog/how-to-recover-corrupted-lotus-notes-archive-file/
Website - https://www.esofttools.com/nsf-to-pst-converter.html