Add-ons
Most Popular All »
- 1. Lightning 7,162,362 users
- 2. ImportExportTools 498,469 users
- 3. Provider for Google Calendar 329,624 users
- 4. Enigmail 140,295 users
- 5. gContactSync 95,973 users
- 6. LookOut (fix version) 93,871 users
- 7. Send Later 74,514 users
- 8. Mail Merge 66,252 users
- 9. LookOut 62,562 users
- 10. Mail Redirect 39,564 users
Featured Extensions See all »
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Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.2,819 users -
The first and only download manager/accelerator built inside Firefox!1,391 users -
ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.17,982 users -
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.7,162,362 users
Up & Coming Extensions See all »
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Quickly highlight some text in Thunderbird message composing windows.9,597 users -
Display birthdays from the Thunderbird addressbooks as events in Lightning.12,817 users -
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.9,563 users -
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".2,888 users -
A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)
As of version 2016.2, Custom keys (using custom JavaScript) work again!4,839 users
Featured Collections See all »
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Featured Add-ons for Seamonkey
None
15 add-ons · 135 followers
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