How can I quickly and efficiently convert PST files to MBOX format?

Allenwanda137

New member
I have several large Outlook PST files containing important emails and attachments that I need to convert to MBOX format so I can use them with Thunderbird. I am looking for a quick and efficient way to do this without losing any data or email structure. Can anyone suggest an efficient method, tool, or best practice to perform this PST to MBOX conversion?
 
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