To export IBM Notes NSF files to in Thunderbird, use the SysInspire NSF to PST Converter Utility. All email attachments, including assignments, contacts, appointments, photographs, notes, and so on, may be safely converted from NSF to Outlook PST. NSF files may be converted to Office 365, HTML, EML, EMLX, vCard, EMLX, MBOX, EML, CSV, vCal, and MSG with this program. It is capable of converting various Lotus Notes NSF data such as (emails, messages, schedules, contacts, notes, and so on) to Outlook PST. You can also try its free version that will allow you to convert 25 of your NSF file to PST outlook free of cost.
Read More- Open NSF File in Thunderbird