IBM Notes allows users to archive old emails in NSF format to free up space, but these archived files cannot be directly opened in Outlook. The manual approach requires first restoring the archive to Lotus Notes and then using the export/import method, which is time-consuming and prone to errors like missing attachments or altered formatting.

A more reliable way is to use eSoftTools NSF to PST Converter, which allows users to directly convert Lotus Notes archive files into Outlook PST format. The software ensures that all email properties, folder hierarchy, and attachments are preserved. It also provides a preview option before migration, making it easy for users to select specific data for conversion.

Complete Guide: Open Lotus Notes Archive Files in Outlook PST