Add-ons

QuickFolders (Tabbed Folders) by Realraven (Axel Grude), Alexander Malfait

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Collector's Note Totally Awesome. Essential for Thunderbird / SeaMonkey / Postbox: Tames the Mail Folder Tree monster.

Stationery by Arivald

Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

Collector's Note My main reason for using this - it adds a HTML tab to the composer window. So no more bloated mark up in my Emails!

quickFilters by Realraven (Axel Grude)

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

SmartTemplates by Realraven (Axel Grude), Marky Mark DE

SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.

Color Folders by fisheater

Color your Folder Treeview Icons!

Nautipolis for Thunderbird by alfredkayser

Nautipolis for Thunderbird: High-quality, solid theme 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.

ColumnsWizard by Mic, Christopher Leidigh

New 78 Compatible Version beta:
https://github.com/micz/ColumnsWizard/issues/95

Adds some magic to the messages list columns!
* Add a custom column
* Set the default columns for any new folder
* Edit custom columns headers

QuickPasswords by Realraven (Axel Grude)

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Collector's Note Dead handy. Get your passwords without displaying them - please review so I can make this one public.

Menu On Top (SuperMenu Avatar) by Realraven (Axel Grude)

Move the Thunderbird menu bar to the top. Choose from a selection of visual styles + colors. Add frequently used bookmarks and an avatar icon without wasting precious screen space. Bookmark your favorite sites, emails, folders or configuration pages.

QuoteCollapse by Michael J Gruber

Collapse and expand quotes.

Contributors: Stanimir Stamenkov, Dillinger

Collector's Note Essential Thunderbird Plugin. You simply can't do without this.

Copy Sent to Current by Günter Gersdorf

Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.

Collector's Note If you (like me) still rely on Folders to keep your zillions of mails organized, this one might be quite a productivity enhancement - you can answer to an email, and instead of filing your reply into the Sent folder the copy can go to any other folder, (Usually the one you are in) - so you can see & treat your message thread in-line, which results in less searching and moving. Phew, I hope I explained that one right ;)

Zombie Keys (Multilanguage Keyboard) by Realraven (Axel Grude), Kai Bolay

Enter accents, diacritics, diaeresis, umlauts, ligatures etc. with keyboards of various countries (us,uk,ie,fr,it,ru,de,sv) - via easy to remember shortcuts or menu. Also supports all textboxes of the application (such as search, filters).

Collector's Note For all multi-linguists who have to use a non-native keyboard! Totally cool; just use the shortcut key and you can tÿpë Ümlãuts, diacritics etc without having to remember lengthy ASCII codes.

Get Selected Mails by TrVTrV

Gets new messages for selected mail accounts.

Collector's Note Another essential little time saver! If you have many email accounts and don't want to download all Inboxes at the same time, this is for you!

NestedQuote Remover by Achim Seufert

Remove nested quotes when replying to a mail.

Collector's Note Very handy for those looong threads.

Console² by Philip Chee, zeniko

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Collector's Note Best & easiest error trapping tool out there. Highly Recommended!