Created a new Ubuntu 24 something machine. Thunderbird was installed with SNAP. SNAP Sandbox Invalidates Decades of Tutorials on Migrating Profiles. Uninstall Thunderbird with SNAP Reinstall Thunderbird with apt-get Try to Export on my Mac my 4 email account profiles to a .zip files. One of them is 38GB, so this won't work. Try copying the the folders to a USB Drive and then moving them over to the user/<name>/.thunderbird folder. Why can't I just drop them in there and then start thunderbird and it loads everything and doesn't ask me to provide a password for my email accounts? I mean wouldn't that be ideal? What's the correct procedure?