Howdy!
I suggest must check manual or free method before purchasing any reliable NSF to PST Converter Tool. Find manual steps from web search where you only need to follow some steps like Export NSF files from Lotus Notes to CSV, then Import the exported CSV into Outlook. Another option is to check free demo version of MCT Lotus Notes to Outlook Converter that can be used to convert and export Lotus Notes emails, contacts, calendar, Tasks, Journals to multiple file-formats including PST, PDF, EML, EMLX, MHT, MBOX, HTML, CSV, etc.