Recently Updated Extensions

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Reply to Multiple Messages

Add menu commands for replying to multiple messages at the same time.

Rated 5 out of 5 stars (3)
357 users
Updated Dec. 26, 2017

QuickFolders (Tabbed Folders) Requires Restart

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Rated 5 out of 5 stars (120)
22,647 users
Updated Dec. 25, 2017

quickFilters Requires Restart

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

Rated 5 out of 5 stars (31)
13,289 users
Updated Dec. 25, 2017

Enigmail Requires Restart Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (200)
147,495 users
Updated Dec. 18, 2017

CuteButtons

Adds icons to buttons and/or menus.

Rated 4 out of 5 stars (94)
4,984 users
Updated Dec. 9, 2017

Classic Toolbar Buttons [Fx45-56][Tb24-58]

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.

Beta builds on versions page!

Rated 5 out of 5 stars (144)
25,331 users
Updated Dec. 8, 2017

WebRTC Permissions UI Toggle Requires Restart

A toolbar button for SeaMonkey to bypass the missing WebRTC permissions dialog and temporarily allow media capture.

Not yet rated
43 users
Updated Dec. 8, 2017

Menu Filter

Keep your menus in check by filtering out items you never use.

This extension is not being converted to a WebExtension.

Rated 4 out of 5 stars (50)
3,903 users
Updated Dec. 4, 2017

LookOut (fix version) Requires Restart

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey

Rated 4 out of 5 stars (19)
60,512 users
Updated Nov. 29, 2017

QuickPasswords Requires Restart

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (50)
3,685 users
Updated Nov. 26, 2017

CardDAV Browser Requires Restart

A utility to browse vCards stored on a CardDAV server.

Rated 3 out of 5 stars (6)
1,249 users
Updated Nov. 24, 2017

Contact Photos Requires Restart

Displays contact photos in the message header.

Rated 4 out of 5 stars (26)
2,777 users
Updated Nov. 23, 2017

gContactSync Requires Restart

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Rated 4 out of 5 stars (231)
97,249 users
Updated Nov. 23, 2017

GNOMErunner Options Requires Restart

Allows to customize GNOMErunner theme

Not yet rated
874 users
Updated Nov. 18, 2017

Tiny JavaScript Debugger Requires Restart

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.

Rated 4 out of 5 stars (8)
19,354 users
Updated Nov. 5, 2017

Caret Out Requires Restart

Disables change of the caret browse mode by shortcut key(F7).

Rated 5 out of 5 stars (3)
205 users
Updated Nov. 3, 2017

Classic Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 4 out of 5 stars (3)
647 users
Updated Oct. 31, 2017

Saved Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (376)
67,204 users
Updated Oct. 31, 2017

Mozilla Archive Format, with MHT and Faithful Save Requires Restart

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

Rated 5 out of 5 stars (343)
90,346 users
Updated Oct. 28, 2017

DownloadStudio Firefox Integration Requires Restart

Firefox Integration for DownloadStudio

Not yet rated
45 users
Updated Oct. 25, 2017