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ThunderPlunger
Requires Restart
Sorry but this addon is no longer supported in TB 60. See below.
This add-on provides a few new ways to keep Thunderbird clean.
Colorific
Colorize entire web pages. Configure themes using sliders and drag-and-drop. Set domain preferences for automatic coloration.
Littlebird for Thunderbird
Requires Restart
Littlebird for Thunderbird, based on icons from art.gnome.org. Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes.
Send to Things for Thunderbird
Requires Restart
Create a new Things task from the current email you are viewing. Opens the quick add dialog with subject and message content pre-filled.
I've created this add-on as a user of Things, it is not created or endorsed by Cultured Code.
Extension Auto-Installer
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
ThamiZha! Solthiruthi(Tamil spellchecker)
Tamil Spell checker by Thamizha.com Team.
Its creators include Ve. Elanjelian, S. Muguntharaj, Radhakrishnan, Vijay, A. Suji, Malathi Selvaraj, Sri Ramadoss, Yagna Kalyanaraman, Lavanya Sundararajan, Pranava Swaroop and Siddarth Vengatesan.
Advanced Unread Folders
Requires Restart
Adds a folder view showing unread folders, including their hierarchy. This is helpful if you have a lot of folders to make sure you don't miss an email, or if you are not happy with the existing unread folders view.
Profile Folder Button
Reply As Original Recipient
Requires Restart
Reply with the From: field set to the To: field from the original email.
Column Reader
Web reader for wide screens and long documents. Read with pleasure in attractive layouts.
Safe for Amoled
Get Selected Mails
Eesti keele speller
Estonian spellchecking dictionary for Firefox, Thunderbird and Seamonkey...
Trashcan
Requires Restart
Have you ever accidentally deleted an event and didn't notice? Undo is no longer available? Then this extension is for you! All deleted items are put into a special Trashcan calendar for your safety.
Thunderbird-DontRestoreTabs
Requires Restart
Allows the user not to restore tabs at startup in Thundertbird
Slovak spell checking dictionary
Slovak spell checking dictionary for Mozilla applications (based on the "open-source" dictionaries by Zdenko Podobný).
DragToCompose
Requires Restart
Enables dragging a file to Thunderbird for composing a new message without opening composer window first.
Show Password On Input
Requires Restart
Gives an option to show the master password on input
To create your own collections, you must have a Mozilla Add-ons account.
