Learn the Basics. Get Started All All articles and threads In English Notifications in Thunderbird Thunderbird and Gmail The difference between IMAP and POP3 How to change the Thunderbird layout Cannot send messages Make Thunderbird the Default Mail Client Getting Started with the Thunderbird main window (Supernova and newer) Ignoring threads Installing an Add-on in Thunderbird Getting started with the Thunderbird main window Get started with Thunderbird Thunderbird Accessibility Features New in Thunderbird 102 Protect your Thunderbird passwords with a Primary Password Maildir in Thunderbird Thunderbird end of Support for XP and Vista Dangerous directories Unified Toolbar