You want to Import PST to Thunderbird Without Outlook. Try Convert PST file to MBOX Tool is instant to Outlook PST data file to Thunderbird MBOX file format without MS Outlook. With this software, you can quickly and easily import PST to Thunderbird
without Outlook. This software is export Single and Mutliple Outlook PST file to MBOX file format. This software is MBOX-based email clients, including Mozilla Thunderbird, Apple Mail, Sea Monkey, Eudora, and many others, are supported by this
application. This software is supports all Outlook PST file to EML, MBOX, VCF, MSG, EMLX, HTML, MHTML, etc. This software supports all Windows OS versions such as 11, 10, 8.1, 8, 7, XP, and Vista. It also supports all MS outlook versions 2021 & 1997.
This software is also providing a free demo version to check the software features.
For more info visit here:-
https://www.sametools.com/convert/pst/
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