To convert NSF to MBOX without losing data, load your NSF file into the SysInfo NSF to MBOX Converter, preview the mailbox items, choose MBOX as the output format, and start the conversion. The tool keeps the folder structure, attachments, and formatting intact so the resulting MBOX file looks exactly like your original Lotus Notes data. Read more: https://www.sysinfotools.com/nsf-to-mbox-converter.php