I suggest copying your entire profile over to the new laptop. This is how I've always done it (Windows). It preserves your whole existing setup. Copy TB files from the old PC - launch TB on the old PC - go to TB menu > Help > Troubleshooting Information - click the Application Basics > Profile Folder 'Open Folder' button - the profile folder will open - navigate three levels up to the AppData\Roaming folder - close TB - copy the AppData\Roaming\Thunderbird folder to a flash drive --- Install and launch TB on the new PC, then start setting up the new profile. Skip to the next section if you've already installed TB and created a profile. - on the 'Set Up Your Existing Email Address' screen, enter name and email address only - click the 'Configure manually' link - scroll down and click 'Cancel' - exit setup - close TB --- Paste the copied TB files to the new PC - open the AppData\Roaming folder like you did above - delete the Thunderbird folder, or copy it somewhere if you want to save it - replace it with the Thunderbird folder from the flash drive - launch TB