Extensions are small programs (or plug-ins) that add new functionality to Thunderbird.
To learn more about installing and using Thunderbird extensions, see Thunderbird.

David R. Cheriton School of Computer Science
University of Waterloo
Waterloo, Ontario, Canada N2L 3G1
Tel: 519-888-4567 x33293
Fax: 519-885-1208
Contact | Feedback: webmaster@cscf.cs.uwaterloo.ca | David R. Cheriton School of Computer Science | Faculty of Mathematics