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Get old emails from non-working Thunderbird

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BACKGROUND I updated my OS to Big Sur (mac). The Thunderbird app no longer worked. I downloaded and installed the newer version and it works fine. PROBLEM I need to migrate the emails from the old Thunderbird, which can not be launched, to the new Thunderbird. I can see the files from the old Thunderbird, so hopefully it will just be a question of moving the data over. Thanks, Will

BACKGROUND I updated my OS to Big Sur (mac). The Thunderbird app no longer worked. I downloaded and installed the newer version and it works fine. PROBLEM I need to migrate the emails from the old Thunderbird, which can not be launched, to the new Thunderbird. I can see the files from the old Thunderbird, so hopefully it will just be a question of moving the data over. Thanks, Will

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Hello there will We have read your message. We try to help you.

Can you explain what is going on on your new operating system? On your IMac or MacBook Pro?

How , does it come like this? Did you updated The software from Thunderbird? A non working Thunderbird .exe file?

https://support.mozilla.org/en-US/products/thunderbird/install-migrate-and-update/copy-your-personal-information-one-thunderbird-another



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