Appearance and Customization

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AddressBook in Tab Requires Restart

Adds a button that can be put in toolbars which opens the addressbook in a new tab like pastismans AddressBookTab

Rated 4 out of 5 stars (1)
425 users
Added March 28, 2017

Keep in Taskbar Requires Restart

A simple plugin that makes the Close button behave exactly like the Minimize one.

Not yet rated
334 users
Added February 7, 2017

lightningWeather Requires Restart

LightningWeather shows the weather forecast in the background of the calendar so you can easily coordinate your activities with the weather.

Rated 3 out of 5 stars (3)
447 users
Added January 15, 2017

CustomizeMyBird

CustomizeMyBird add-on offers ui tweaks to improve Thunderbirds appearance (squared tabs, custom tab height, alternative Add-on Manager appearance, compact main toolbars and more).

Rated 4 out of 5 stars (6)
962 users
Added October 28, 2016

Checkbox Column Requires Restart

Adds a custom column to Thunderbird's messages list (thread tree), making it easier to select multiple messages on devices with a touchscreen display.

Rated 4 out of 5 stars (3)
445 users
Added August 26, 2016

Layout Button Requires Restart

A toolbar button to switch between layouts.

Rated 5 out of 5 stars (1)
309 users
Added July 9, 2016

Large Fonts Requires Restart

This add-on enables you to change the font size of the plain text editor of Thunderbird.

Rated 3 out of 5 stars (2)
585 users
Added June 25, 2016

Tategaki Requires Restart

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
32 users
Added May 16, 2016

Highlight Unread Folders Requires Restart

This add-on enables highlighting the account names which contain unread messages.

Not yet rated
302 users
Added May 15, 2016

Website to PDF Requires Restart

Convert the current webpage into a PDF file!

Just for now - get also a PRO version for FREE!

Rated 1 out of 5 stars (3)
5,499 users
Added May 10, 2016

Send Later Button Requires Restart

A simple button to invoke the (already existing) send later functions.

Not yet rated
4,216 users
Added April 28, 2016

ansitel Click-to-Dial Thunderbird Requires Restart

Click-to-Dial Plugin für ansitel VoIP-Telefonanlagen zum Markieren und Wählen von Rufnummern in Mozilla Thunderbird.

Not yet rated
24 users
Added April 27, 2016

Lowercase Email Addresses in Message Headers Requires Restart

Shows lowercase email addresses in message headers and their tooltips.

Rated 1 out of 5 stars (1)
57 users
Added March 28, 2016

AntiLostFilter Requires Restart

Фильтр для конференций AUTO.RU

Rated 5 out of 5 stars (1)
50 users
Added March 13, 2016

Responsible Blocker

The "Responsible Blocker" arrives to save the Internet, this extension blocks all those annoying ads, but allows only small and acceptable ads, so the websites you like can continue online.

The "Responsible Blocker" arrives to save the Internet

Rated 5 out of 5 stars (1)
168 users
Added March 9, 2016

Sender Frequency Requires Restart

Adds a custom column for Sender Frequency to the thread pane

Rated 5 out of 5 stars (3)
106 users
Added March 7, 2016

Classic Pop-up Alerts

This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0

Not yet rated
939 users
Added February 20, 2016

GNotifier

Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.

Rated 5 out of 5 stars (30)
15,704 users
Added February 14, 2016

Email Addresses in Message Headers Requires Restart

Shows email addresses in message headers, including those of contacts, and provides control over message header presentation.

Rated 3 out of 5 stars (2)
362 users
Added February 13, 2016

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (6)
1,011 users
Added January 12, 2016