Import Lotus Notes file to Outlook file in bulk. You can accomplish this by using the Lotus Notes to Outlook Converter Tool. That is the most efficient method for importing all email folders from Lotus Notes files into Outlook. This utility, which imports Lotus Notes data to Outlook files, allows users to save time. It works with all email applications. After importing Lotus Notes files to Outlook, users just open the data in MS Outlook. This application supports all versions of MS Outlook and Windows OS. This is lightweight software so users can simply install and store it. Refer: https://www.softakensoftware.com/lotus-notes-to-outlook-converter.html

Users can convert an unlimited amount of Lotus Notes.NSF files to PST files with the use of the DataVare Lotus Notes NSF to PST Converter program.  With text, attachments, folders, subfolders, email attributes such as to, from, cc, and bcc, sent and received messages, dates and times, calendar items, task items, protected emails, and attachments, it transfers Lotus Notes to Microsoft Outlook and turns NSF to PST with efficiency.
All Lotus Notes versions—10.0.1, 9.0, 8.5, 8.0.2, 7.0, etc.—and Outlook editions are completely supported by it. The utility operates on all versions of Windows and offers a free demo to learn how it works. 

I recommend using the Aryson Lotus Notes to Outlook Converter Tool for seamless conversion of NSF files to various formats, including Outlook PST, EML, MBOX, MSG, and PDF. This tool facilitates the smooth migration of Lotus Notes email messages, contacts, calendars, and other data to the Outlook client. It also supports importing single or multiple NSF files into Exchange Server, Office 365, and other cloud-based email platforms. Additionally, it enables the transfer of emails from Lotus Notes (NSF) files to popular email clients such as Gmail, Yahoo, IMAP Server, and AOL Webmail Accounts. The software offers a free trial version for backing up to 50 items, and full functionality is available via a paid subscription.

If you are looking for a way to convert NSF to PST format, you can try NSF to PST Converter software. Tool designed to convert Lotus Notes NSF file to Microsoft Outlook PST file. It can be used to transfer data from Lotus Notes to Outlook or another system. It’s a robust tool that makes it easy to transfer emails, contacts, calendar entries, tasks, and other data from Lotus Notes to Outlook. It can also be used to transfer data from one Notes account to another. The software is user-friendly and can be easily handled by technical and non-technical people.