You can try the easiest way MBOX to PST Converter Tool which migrates MBOX files to Outlook PST files without data loss. This app can easily save multiple Thunderbird MBOX files to Outlook PST files. The app can support all email clients, like Mozilla, Thunderbird, Poco Mail, Sea Monkey, Gnu, Post Box, Apple Mail, etc. It's a small application so users can easily install this app. It works on any Windows operating system version, like Windows 11, 10, 8.1, 8, 7, Vista, and XP. A free demo version of this application is available to users.

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