it can handle large NSF files

Users may easily convert NSF files, which contain emails, contacts, calendars, tasks, notes, conversations, attachments, documents, appointments, journals, and more, into a number of formats, such as PST, HTML, MBOX, EML, EMLX, Cloud, Yahoo, Gmail, Office365, Zimbra, and more. With the application vMail NSF to PST Converter. Additionally, users can select emails based on when they were sent. It has the ability to split large PST files into smaller ones. When converting using this program, users can obtain a thorough preview of NSF file components. It might offer trial versions of the program0 to test out its features and functionality as well as 24/7 technical helps.
Capable of converting both a single and numerous NSF files at once.
There are no size constraints on the utility; therefore it can handle large NSF files.
Exporting contacts from Lotus Notes to Outlook in PST, vCard, MSG, and CSV.
Know more info- https://www.vsoftware.org/nsf-to-pst-converter.html