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Clean Subject Requires Restart

"Clean Subject" cleans the subject from multiple occurrences of subject prefixes such as ("Re: Re-2: Re:") and postfixes that are inserted by other clients. Words like "[SPAM]" can be cleaned as well. These prefixes can be defined in the preferences.

Rated 4 out of 5 stars (47)

29 users

Stacked Inspector Requires Restart

Switch DOM Inspector to an over/under vertical layout instead of the usual side-by-side panel layout.

Rated 5 out of 5 stars (10)

0 users

Montezooma Requires Restart

Montezooma is a Thunderbird Addon that adds zooming functionality to windows.

Rated 4 out of 5 stars (6)

3 users

Highlight External Addresses Requires Restart

This extension helps to warn the user when composing a message to a mixed group of people both in and out of the sender's organization. External addresses are highlighted in orange as a reminder.

Rated 4 out of 5 stars (2)

5 users

New Plugin Disabler

Deactivates new plugins.

Rated 5 out of 5 stars (4)

0 users

DirSwitcher Requires Restart

Change direction in compose...

Not yet rated

0 users

Hindi Pop up Requires Restart

After installing this extension, just hover the mouse on top of an English word and a pop-up will appear with suggestions of possible hindi equivalents.

Rated 5 out of 5 stars (3)

0 users

Multi-LDAP Requires Restart

Permits to use several LDAP directories simultaneously for address autocompletion.

Rated 4 out of 5 stars (12)

0 users

Moji Requires Restart

An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.

Rated 4 out of 5 stars (9)

1 user

World Weather Requires Restart

Display local weather information from around the...

Rated 1 out of 5 stars (2)

0 users

Test Pilot for Thunderbird

Add-on has now been discontinued, see below.

Rated 1 out of 5 stars (15)

164 users

Classicish Add-on Manager Requires Restart

A restyling of the Add-on Manager to a more native appearance.

Rated 4 out of 5 stars (17)

6 users

About Home Themer

Enables theming of the About:Home page by providing a simple redirect

Rated 5 out of 5 stars (2)

0 users

Gitter Requires Restart

Assists to setup a chat account for gitter.im
Where developers come to talk.

Rated 3 out of 5 stars (1)

1 user

Subject Cleaner Requires Restart

Remove extra strings from the subject while composing the message.

Rated 4 out of 5 stars (13)

108 users

Simple Steganography Requires Restart

Hide messages in PNG-32 images, extract them via context menu. The text is embedded invisibly by a "Least Significant Bit" algorithm.

You can also encode very short messages by re-sorting text lists and extract them via context menu.

Rated 5 out of 5 stars (1)

0 users

IT Next Consultant Requires Restart

Assists to setup a chat account for IT Next Consultant, LLC.

Not yet rated

0 users

DownloadStudio Firefox Integration Requires Restart

Firefox Integration for DownloadStudio

Not yet rated

0 users

Simple HT Jumper Requires Restart

A temporal simple jumper of HTML and Plan TEXT view mode on showing messages and replying messages for Thunderbird without changing the default setting.

Rated 5 out of 5 stars (16)

4 users

Address Cleaner Replying Requires Restart

メッセージ返信時に宛先に含まれる表示名を除去します。
A display name is erased when an e-mail screen is opened.

Rated 5 out of 5 stars (2)

5 users