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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.
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.
Moji Requires Restart
An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.
Classicish Add-on Manager Requires Restart
A restyling of the Add-on Manager to a more native appearance.
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.
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.
Enhanced Desktop Notifications
Provides enhanced new mail desktop notifications using the notify-send library. Linux only.
CIX Forums Requires Restart
Open CIX Forums in Thunderbird. Free CIX accounts from https://forums.cix.co.uk/signUp.aspx?p=cixbasic
Wepware - Capture and Share Live Content Requires Restart
Grab live snapshots of anything on the internet, organize your collected content into folders and share with friends through SNS.
Greek Polytonic Spelling Checker
Διορθωτὴς πολυτονικῶν κειμένων σύμφωνος μὲ τὴν ἑλληνικὴ ἱστορικὴ ὀρθογραφία.
Flexible Identity Requires Restart
Selects an identity based on the recipients list when sending an email
Mailsleuth Requires Restart
Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!
Android Debug Bridge For Firefox
This addon adds some Android Debug Bridge access to Firefox. It requires access to the adb/adb.exe executable from the Android SDK.
Folder Levels Requires Restart
Rank your email folders by how much you care about them, and hide the ones you don't need right now.
Mail and Save Tab URLs Requires Restart
If you often share web page addresses (URLs) with others or save them in text file, bookmark, or copy to clipboard for your own reference, this extension will make your life easier!
Unread Count Requires Restart
Maintains a file in the profile root directory with counts for unread messages per account. Useful for display in generic status bar, e.g.: taffybar, xmobar, dzen2, etc
ReloadPAC Requires Restart
Workaround for Bug 351163 (Thunderbird bypasses proxy.pac for first connection).
sepsis-console (Deprecated) Requires Restart
THIS VERSION IS DEPRECATED. Use https://addons.mozilla.org/en-US/developers/addon/sepsis-console instead. See the description below.
sepsis-console is a general-purpose JavaScript console for all Mozilla toolkit applications.
To create your own collections, you must have a Mozilla Add-ons account.