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Latin Dictionary
Silent Block
Stego Block
Requires Restart
Embeds a small secondary, encrypted message in an email, known as a Stego Block.
Launchy
Requires Restart
Launchy will enable you to open links and mailto's with external applications...
eCleaner
ThunderBirthDay
Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.
Hebrew spell-checking dictionary (from HSpell)
Hebrew spell-checking dictionary for Firefox and Thunderbird. Generated from data of the HSpell project version 1.4, and distributed freely under the AGPLv3.
SoundPlus
Requires Restart
SoundPlus customizes the sound that is played when a new message arrives for a particular contact in the address book, similar to mobile phones. There is also a variation that is played when a message arrives and it is a continuation of a thread.
TreeStat
Use Bcc Instead
Requires Restart
Sorry but this addon is no longer supported in TB 60. See below.
Who among us has not made the mistake of sending a 'broadcast' email to a large number of recipients without using BCC; thereby revealing everyone's email addresses to all?
Compact Menu 2
Requires Restart
Add a compact menu button to the navigation toolbar, and hide the menu bar.
EmailPicky 4
Requires Restart
Grab email addresses from emails from any selected Email Folder and add them to your contacts. (Email Crawler / Email ID Grabber / Bounced email collector) - Thunderbird Plugin
Note: It doesn't create duplicates, but shows as 'xxx messages added'.
Bamboo Feed Reader
Requires Restart
Feed reader | RSS - ATOM - OPML
This extension has NOT been rewritten with the new WebExtensions API (Firefox Quantum).
No future version is planned by the original developer.
Bamboo is still running with Palemoon.
Subject Manager
Google+ Share for Thunderbird
Requires Restart
Share a URL in Google+ directly from Thunderbird. This addon is the Thunderbird XUL version of Google+ Share for Firefox Desktop.
Folderpane Tools
Requires Restart
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
Email signature for Thunderbird - WiseStamp
Requires Restart
Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more
Certificate Patrol
Requires Restart
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
Extra Format Buttons
Requires Restart
Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.
Vietnamese Dictionary
Enables spell checking in Vietnamese with a wordlist based on Hồ Ngọc Đức’s Free Vietnamese Dictionary Project.
To create your own collections, you must have a Mozilla Add-ons account.
