I found this excellent performing PassFixer NSF to PST Converter software with the best survey. This software can export Lotus Notes NSF files into various formats like PST, HTML, MBOX, EML, EMLX, Yahoo, Gmail, Office365, Zimbra, vCard, ICS, Cloud, etc. This tool will be able to display the complete preview of NSF file items before the conversion like emails, contact, calendar, etc. demo pack is also present in this software for user satisfaction with the use of demo pack user can convert starting 25 folders of emails for free.
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