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Identity Select Requires Restart

This extension allows you to choose the identity of your new email from a popup menu directly from the Write button. This feature behaves in a similar manner as the Get Mail pulldown menu. In addition, the default behavior of the Write button is...

Rated 4 out of 5 stars (9)
94 users

MR Tech About:About Requires Restart

Adds the following "about:" options to the Help menu

Rated 3 out of 5 stars (7)
94 users

Serial Letter Requires Restart

Provides the ability to start writing a template-derived letter directly from within the address book. Supports also multiple recipients. Supports only TeX and similar systems at the moment.

Not yet rated
93 users

Quick Folder Key Navigation Requires Restart

This extension makes it possible to quickly navigate to a particular folder in the folder pane simply by typing the first few letters of the folder name when the folder pane has focus.

Not yet rated
92 users

ClickGuard

Prevent accidental interaction with tab contents

Not yet rated
92 users

中止ボタンがサーニャに見えて困る Requires Restart

中止ボタンがサーニャに見えます。読み込み中は目が開きます。ただそれだけです。
エイラ「中止ボタンをそんな目で見んなああああぁぁぁぁ」

Not yet rated
91 users

ToggleFullHeaders Requires Restart

Allows you to customise the message panel buttons to add a "Toggle Headers" button that will switch between showing and hiding the full headers.

Rated 1 out of 5 stars (1)
91 users

Mozilla Labs - Jetpack Prototype Requires Restart

Jetpack Prototype is an experiment in making it easy to build Firefox add-ons using common web technologies.

Rated 4 out of 5 stars (27)
88 users

Tag the Bird Requires Restart

Tag the Bird gives the power of tagging to Thunderbird.

Rated 3 out of 5 stars (14)
88 users

Sensitivity Header Requires Restart

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.

Rated 4 out of 5 stars (1)
85 users

Elegant Scrollbar Cursors

Display helpful, informative cursors for scrollbars.

Not yet rated
85 users

Set Default Columns Requires Restart

Provides ability to set default visibility of columns in the thread pane.

Rated 3 out of 5 stars (3)
85 users

CopyHeader Requires Restart

ヘッダ情報をクリップボードにコピーします。
mimeデコードに対応してないアプリに貼り付けるために
mimeデコードした宛先送信元タイトルでサンドイッチしてます

Rated 4 out of 5 stars (2)
85 users

Preferential (New GUID) Requires Restart

Advanced preferences manager for Mozilla-based...

Rated 3 out of 5 stars (5)
85 users

Forumzilla Requires Restart

Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...

Rated 3 out of 5 stars (5)
85 users

Gravatars Requires Restart

Show a column with the Gravatar-picture and sender-name in email folders.

Not yet rated
84 users

~okeanos for Filelink Requires Restart

Add ~okeanos support to Thunderbird's Filelink feature.

Not yet rated
84 users

Linux Growl Requires Restart

Sends linux notifications using notify-send when a new email or a RSS feed is received.

Required:
sudo apt-get install notify-osd

Rated 4 out of 5 stars (1)
84 users

ThreadBubble Requires Restart

Make Thunderbird resort threads by date when a new message arrives. *** This add-on is no longer required for new versions of Thunderbird! ***

Rated 4 out of 5 stars (22)
84 users

xmpp4moz Requires Restart

xmpp4moz integrates the XMPP protocol (also known as Jabber) into Mozilla applications.

Rated 5 out of 5 stars (1)
83 users