Up & Coming Extensions

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Restartless Restart No Restart

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

Rated 4 out of 5 stars (214)
26,779 users

Leet Key

Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...

Rated 4 out of 5 stars (51)
5,079 users

Lightning Colors Reminder

Let's show the calendar color on Lightning reminders!

Not yet rated
3,695 users

Rise of the Tools No Restart

Moves the toolbar back above the tabbar.

Rated 5 out of 5 stars (58)
3,629 users

BlunderDelay

Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.

Rated 4 out of 5 stars (13)
1,333 users

GNOME Keyring integration

GNOME Keyring integration

Rated 5 out of 5 stars (8)
2,010 users

IMAP Quota (Free Space)

This Thunderbird addon let you customize the behaiour of the IMAP quota statusbar panel.

Not yet rated
2,126 users

Password Tags

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (7)
2,874 users

QuickArchiver

Clean up your inbox! While moving a mail the first time, QuickArchiver remembers the destination folder and enables you to move further mails with a single click. You can apply rules by sender, recipient and subject.

Rated 4 out of 5 stars (9)
1,166 users

Slim Add-ons Manager No Restart

The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.

Rated 5 out of 5 stars (47)
9,290 users

Text Link

Allows URI texts written in webpages to be loaded by double clicks.

Rated 4 out of 5 stars (293)
131,340 users

tzpush

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (12)
2,017 users

Signature /Auto Paste /Prefill Fourms

Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )

Rated 4 out of 5 stars (24)
4,372 users

OpenSearch

OpenSearch is a Mozilla Messaging addon that will allow you to search the web from within Thunderbird.

Rated 3 out of 5 stars (8)
1,629 users

Exif Viewer

Displays the Exif and IPTC data in local and remote JPEG images.

Rated 4 out of 5 stars (85)
61,062 users

Disable Add-on Compatibility Checks No Restart

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Rated 4 out of 5 stars (100)
37,820 users

Execute JS

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Rated 5 out of 5 stars (13)
5,231 users

Stylish Tools

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

Rated 4 out of 5 stars (3)
1,407 users

AddressBook In Mode ToolBar

Add adressbook button to "mode toolbar" (requires lightning extention)

Rated 4 out of 5 stars (7)
1,369 users

NoiaButtons No Restart

The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.

Rated 5 out of 5 stars (14)
15,074 users