how to copy mail from office outlook to thunderbird
i use outlook from office 365 and want to change to thunderbird. How can I copy all mail to thunderbird from my 6 accounts?
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If TB is installed on the same computer as Outlook, you can try the TB import wizard: Tools/Import... select Mail (don't choose Everything). If that doesn't work, and you're on Windows, some users have found success with MailStore Home as an intermediary between Outlook and TB.