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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 (128)
21,775 users
Updated April 24, 2019

CardBook Requires Restart Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon

Rated 4 out of 5 stars (200)
46,859 users
Updated April 24, 2019

Quicktext Requires Restart

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (334)
95,502 users
Updated April 20, 2019

Owl for Exchange

Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird

Rated 4 out of 5 stars (9)
2,256 users
Updated April 18, 2019

Ruler Bar Requires Restart

This appends a ruler to the mail composition window.

Rated 4 out of 5 stars (8)
1,702 users
Updated April 18, 2019

Remote Content By Folder

Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.

Rated 5 out of 5 stars (1)
71 users
Updated April 17, 2019

Theme Disecor - Cantineoqueteveo

Complemento para ver las estadistcas del concurso cantineoqueteveo en Madrid España.

Not yet rated
0 users
Updated April 17, 2019

Single Domain

Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.

Rated 5 out of 5 stars (2)
302 users
Updated April 8, 2019

Master Password+ Requires Restart

Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows

Rated 4 out of 5 stars (177)
4,825 users
Updated April 8, 2019

Zombie Keys (Multilanguage Keyboard) Requires Restart

Enter accents, diacritics, diaeresis, umlauts, ligatures etc. with keyboards of various countries (us,uk,ie,fr,it,ru,de,sv) - via easy to remember shortcuts or menu. Also supports all textboxes of the application (such as search, filters).

Rated 5 out of 5 stars (24)
596 users
Updated April 7, 2019

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 (38)
13,279 users
Updated April 7, 2019

Shrunked Image Resizer Requires Restart

Make your photos smaller, so they don't take forever to email.

Rated 3 out of 5 stars (41)
7,126 users
Updated April 5, 2019

MailHops Requires Restart

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Rated 4 out of 5 stars (27)
2,262 users
Updated April 4, 2019

ToggleReplied Requires Restart

Enables toggling of replied, forwarded, and redirected states of messages.

Rated 4 out of 5 stars (2)
301 users
Updated April 2, 2019

Undigestify Requires Restart

Undigestify RFC 1153, ListStar, and Yahoo digest messages

Not yet rated
92 users
Updated April 2, 2019

Opacus SugarCRM/SuiteCRM Thunderbird Extension Requires Restart

Enables the archiving of emails into SugarCRM/SuiteCRM from Thunderbird 3 and above.

Rated 5 out of 5 stars (5)
1,101 users
Updated April 2, 2019

TexTra Requires Restart

Thunderbirdのメールのテキストを翻訳、辞書引きを行います。

Not yet rated
56 users
Updated April 1, 2019

Open With Requires Restart

Open With can open your web links in any browser installed on your computer.

Rated 5 out of 5 stars (2)
1,262 users
Updated April 1, 2019

userChromeJS

Load the contents of chrome/userChrome.js from the user's profile directory every time a window is opened.
This is an attempt to re-implement the old userChromeJS extension to make it compatible with Thunderbird 60+.

Not yet rated
0 users
Updated April 1, 2019

Reply to Multiple Messages

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

Rated 5 out of 5 stars (5)
607 users
Updated April 1, 2019