Appearance and Customization

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Colorific. No Restart

Colorize entire web pages manually or automatically. With 28 customizable themes that transform hue, saturation, lightness and opacity. For Firefox 28.0 and above. NEW: Copy themes and group color properties using drag-and-drop.

Rated 3 out of 5 stars (4)
143 weekly downloads

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 (1)
134 weekly downloads

Big Navigation No Restart

Increases the navigation links on the pages

Rated 5 out of 5 stars (4)
131 weekly downloads

ViewAbout

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

Rated 4 out of 5 stars (14)
93 weekly downloads

Column Reader No Restart

Web reader for wide screens and long documents. Read with pleasure in one of many attractive layouts. NEW: Integrated image viewer with pan and zoom + Choice of replacement font. For Firefox 24.0 and newer.

Rated 4 out of 5 stars (5)
79 weekly downloads

Simple Week View

A simple week view for Lightning, as in the print layout.

Rated 4 out of 5 stars (2)
74 weekly downloads

Zoom Button for Thunderbird

Zoom in, zoom out, and reset zoom with one toolbar button. Works in the Compose window too.

Rated 4 out of 5 stars (10)
74 weekly downloads

Mark All Read Button

Adds toolbar buttons to Mark All emails as Read, Mark Thread as Read, and Goto Next Unread Thread.

Rated 4 out of 5 stars (29)
66 weekly downloads

Lightning Reminder Left Buttons

Tired to mistakenly press that "Dismiss All" button? Move the Lightining Reminder "Snooze all for" and "Dismiss All" buttons to the LEFT!
... and from version 2.0 you can keep them on the RIGHT, but swapped!

Not yet rated
65 weekly downloads

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)
62 weekly downloads

Maximize Message Pane

Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...

Rated 4 out of 5 stars (23)
47 weekly downloads

Enhanced Priority Display

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (5)
46 weekly downloads

Menu On Top No Restart

Moves the Thunderbird menu bar to the top. Choose from a selection of visual styles.

It is convenient to have the menu on top of the tabs like Firefox; this is also a good area for placing "global" toolbar buttons like Navigation or get mail.

Rated 5 out of 5 stars (3)
43 weekly downloads

Toggle Folderpane View

This addon provides a toolbar button for toggling between the "All" and "Favorite" views in the folderpane.

Rated 5 out of 5 stars (1)
41 weekly downloads

SanRockstar

Music

Rated 5 out of 5 stars (3)
40 weekly downloads

Auto Zoomer

Keep a preset zoom level across thunderbird restarts.
Usefull on High DPI screens.

Rated 5 out of 5 stars (1)
35 weekly downloads

More Snooze

This add allow to customize the snooze delay when snooze popup appears (lightning required).

Rated 5 out of 5 stars (5)
35 weekly downloads

Windows Taskbar Unread Badge No Restart

Put an unread mail count badge on the Thunderbird icon in the Windows taskbar.

Rated 3 out of 5 stars (11)
31 weekly downloads

Search as list

Search results appear as list (as per the "Open email as list" button).
- return to facet view with shift+close [x]
- auto open list view when few results found
- column config./sort/toggle [IMG3&4]
- apply columns to search as list menu [IMG5]

Rated 5 out of 5 stars (18)
31 weekly downloads

Old-style smilies

Reverts the smilies in Thunderbird to those of version 2.

Rated 4 out of 5 stars (1)
31 weekly downloads