I recommended the professional tool, the NSF to PST Converter. Use the
TrustVare NSF to PST Converter tool. This is a most useful tool for users’ beginner and professional both can use. It protects all data like notes, mobile numbers, calendars, emails, and attachments. Technical and non-technical users can use this utility. It is compatible with all Windows versions, such as 11, 10, 8.1, 8, 7, XP and Vista. Furthermore, it supports all Lotus Notes and Outlook versions. And you can convert 25 NSF to PST files for free in the demo version.
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https://www.trustvare.com/nsf/pst/