Add-ons
Miscellaneous
-
Lightning
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
6,595,262 users
Most Popular See all »
-
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.6,595,262 users -
Allows bidirectional access to Google Calendar309,571 users -
German Dictionary (new Orthography) for spellchecking in Mozilla products229,174 users -
Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.91,163 users
Top Rated See all »
-
True "Send Later" functionality to schedule the time for sending an email.70,013 users -
Add menu commands for replying to multiple messages at the same time.531 users -
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.41 users
Recently Added See all »
-
A bugzilla companion (fixed version). Originally maintained by Fabrice Desré.22 users -
Enables toggling of replied, forwarded, and redirected states of messages.224 users
-
Add menu commands for replying to multiple messages at the same time.531 users
-
With MyAdFilter, free content creators propose you only one ad. Apart from those, as your usual ad-blocker, MyAdFilter disables all ads.18 users
See all 179 extensions in Miscellaneous »
To create your own collections, you must have a Mozilla Add-ons account.
