Add-ons
Appearance and Customization
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WashiBird
A cozy, paper-like theme (Light/Dark). Built as an extension to allow deeper UI customization than standard themes support.
G App Launcher (Google™ Shortcuts)
G App Launcher helps optimize your workflow by letting you open your most commonly-used websites from the browser toolbar. It opens shortcuts in a new tab so you can stay productive your own way.
Table Border
Define automaticamente border=1, cellpadding=3 e cellspacing=0 na tabela HTML onde o cursor está posicionado, direto na barra de formatação da janela de composição.
Caveman Mode — ChatGPT, Claude & Gemini
Make ChatGPT, Claude, and Gemini speak like a smart caveman. Less filler, fewer tokens, same substance.
Spoof Detector
This add-on flags spoofed and spam emails based on SPF, DKIM, DMARC, and header analysis. The flag appears as a banner in the email window.
CodeSnap - Generate Code Images
Turn code on any webpage into beautiful images. Select, right-click, and customize in seconds.
Minimize on Close
Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.
Google Calendar Spaces Tab
Unofficial Google Calendar add-on for Thunderbird, it adds a button in Spaces that opens a Google Calendar tab in Thunderbird.
Yahoo Mail Spaces Tab
Unofficial Yahoo Mail add-on for Thunderbird, it adds a button in Spaces that opens a Yahoo Mail tab in Thunderbird.
MS Mail Spaces Tab
Unofficial Microsoft Mail add-on for Thunderbird, it adds a button in Spaces that opens a Microsoft Mail tab in Thunderbird.
Outlook Spaces Tab
Unofficial Outlook add-on for Thunderbird, it adds a button in Spaces that opens a Outlook (web version)) tab in Thunderbird.
GMail Spaces Tab
Unofficial GMail add-on for Thunderbird, it adds a button in Spaces that opens a GMail tab in Thunderbird.
Quick React
Reply to an email with a quick reaction.Add emoji reactions to your emails in one click.
Réagissez à vos e-mails en un clic avec des emojis.
Compact Headers
Template Menu
Manage, organize, and apply your custom email templates quickly with a single click.
Google Contacts Spaces Tab
Unofficial Google Contacts add-on for Thunderbird. It adds two buttons (in Spaces and in the message reading display bar) that opens a Google Contacts tab. It also adds an entry in the contextual menu when selecting a phone number.
Custom Subject Column
Add a column to the message list that replaces the subject with a regular expression
WhatsApp Web Spaces Tab
Unofficial Whatsapp Web add-on for Thunderbird, it adds a button in Spaces that opens a WhatsApp Web tab and a contextual menu entry when when selecting a phone number.
Google Messages Spaces Tab
Unofficial Google Messages add-on for Thunderbird, it adds a button in Spaces that opens a Google Messages tab, and an entry on a contextual menu where a selected text can be sent to a chat in Google Messages.
Google Chat Spaces Tab
Unofficial Google Chat add-on for Thunderbird, it adds a button in Spaces that opens a Google Chat tab in Thunderbird.
To create your own collections, you must have a Mozilla Add-ons account.
