By default, Thunderbird enables mail notification pop-ups that contain information such as the subject, sender and message preview text of new messages as they arrive. You can change whether you get a pop-up at all or change what you see in the pop-up box, as well as turn audio alerts on or off.
If you don't want to be notified in this way, click Tools > Options > General. Uncheck either or both boxes for Show an alert or Play a sound. Then click OK.
Note: Even if you uncheck both boxes, Thunderbird will still display the small envelope icon in the lower right of your screen.
Library & Technology Services
8A East Packer Ave,
Bethlehem, PA 18015
Lehigh University provides a leading-edge library and technology environment that enables flexibility, innovation, and effectiveness in all areas of the academic enterprise, including learning and the student experience, research, administration, community-building and outreach.
27 Memorial Drive West, Bethlehem, PA 18015