Collections are groups of related add-ons that anyone can create and share. Explore collections created by other users or create your own.

Thunderbird Add-ons? Here's Some Great Ones! by Ken Saunders

Thunderbird add-ons that I've either used for years, or tested and highly suggest.

Mozilla Labs Messaging Add-ons by Firefox user a5b696

The add-ons included in this collection are all ones that are part of the messaging category on Mozilla Labs: