Appearance and Customization

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ViewAbout

Enables access to various about: dialogs from the View menu.

Rated 4 out of 5 stars (17)
2,938 users
Updated July 27, 2016

Tategaki

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
14 users
Updated July 22, 2016

Version Number in Add-ons Manager No Restart

Easily viewable version info in the Add-ons Manager on Firefox/Thunderbird 24.0 and later.
Also restores the add-on version number on Firefox/Thunderbird 40.0 and later.

Rated 5 out of 5 stars (2)
298 users
Updated July 16, 2016

Search Results Sort By Date Not Relevance

Makes search results sort by "date" instead of "relevance" by default.

Rated 5 out of 5 stars (14)
2,885 users
Updated July 13, 2016

TotalQuickFilter

Reboot the QuickFilter bar.

Rated 3 out of 5 stars (6)
391 users
Updated July 11, 2016

Layout Button

A toolbar button to switch between layouts.

Not yet rated
25 users
Updated July 10, 2016

CuteButtons - Crystal SVG

Adds colourful icons to buttons and menus

Rated 4 out of 5 stars (103)
7,060 users
Updated July 8, 2016

Menu Filter No Restart

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

Rated 4 out of 5 stars (46)
3,873 users
Updated July 4, 2016

Responsible Blocker No Restart

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!

Not yet rated
7 users
Updated July 4, 2016

Element Inspector No Restart

In the DOM Inspector,quickly navigate to the any elements

Rated 5 out of 5 stars (28)
3,331 users
Updated July 2, 2016

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (8)
16,568 users
Updated July 1, 2016

Large Fonts

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

Not yet rated
66 users
Updated June 26, 2016

Big Navigation No Restart

enlarging the navigation links on the pages

Rated 5 out of 5 stars (6)
721 users
Updated June 25, 2016

Safe for Amoled No Restart

Darkens the background of the page

Rated 4 out of 5 stars (18)
2,090 users
Updated June 21, 2016

Add-ons Manager - Version Number No Restart

Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (18)
1,579 users
Updated June 17, 2016

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)
14,862 users
Updated June 17, 2016

Website to PDF

Convert the current webpage into a PDF file!

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

Rated 1 out of 5 stars (1)
2,610 users
Updated June 16, 2016

Forecastfox (fix version)

Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Now Available for: Firefox, Thunderbird and SeaMonkey!

Rated 5 out of 5 stars (201)
60,900 users
Updated June 15, 2016

Personas Plus No Restart

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.

Rated 3 out of 5 stars (929)
276,769 users
Updated June 9, 2016

ColumnsWizard

Adds some magic to the mesasges list columns!
With this addon you can:
* Add a custom column
* Set the default columns for any new folder.
* Show hidden columns in the Conversation Tab.
* Edit a mail header value for a single message.

Rated 4 out of 5 stars (5)
968 users
Updated June 8, 2016