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Emoji

Add emojis to your e-mails.

Rated 4 out of 5 stars (64)
22,407 users

AutoarchiveReloaded Featured

Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)

Rated 4 out of 5 stars (28)
21,398 users

Simple Mail Redirection

Allows you to resend (also known as redirect) email messages.
Uses 'cardbook' if installed

Bases on the add-on 'Mail Redirect' by Onno Ekker and Pawel Krzesniak

Please see the support page on how to use and why it sometimes does not work!

Rated 5 out of 5 stars (38)
7,585 users

AI Anywhere for ChatGPT

Press "Alt + i" or use context menu to quickly access:
- ChatGPT (OpenAI)
- GitHub Copilot (Microsoft)
- Claude (Anthropic)
- Gemini (Google)
- Grok (X)
- DeepSeek (深度求索)

Rated 5 out of 5 stars (14)
3,631 users

WhatsApp Web in Thunderbird

Open WhatsApp Web in Thunderbird

Rated 4 out of 5 stars (20)
3,112 users

Google Chat Tab

Open Google Chat in a Thunderbird Tab.

Update: 3 Dec 2024 -
Literally all this extension does is to open Google Chat in a separate tab. Thank you for all your kind comments! I made this to scratch an itch and I'm glad it has helped so many :)

Rated 4 out of 5 stars (11)
1,457 users

Auto-Mark Folder Read

New messages can be automatically marked as read in common folders (e.g. spam, trash, drafts, templates).

For TB up to 121, please use the most recent v1.5.* add-on release.

For TB as of 122, just use the latest add-on version (1.6 or higher).

Rated 4 out of 5 stars (11)
660 users

Telegram Web in Thunderbird

Open Telegram Web in Thunderbird

Rated 5 out of 5 stars (5)
646 users

Google Messages Tab

Adds a button to open Google Messages in a new tab.

Rated 4 out of 5 stars (7)
448 users

Open Google Chat

Adds an icon on the spaces toolbar to quickly open Google Chat.

Not affiliated with Google.

Rated 5 out of 5 stars (1)
363 users

Open in browser

A context menu item to open the links associated with feed items in the default browser and then mark them as read.

Rated 5 out of 5 stars (1)
325 users

ChatGPT Addon

Integrates ChatGPT with Thunderbird for quick and easy access to its conversational AI capabilities.

Not yet rated
251 users

Open Google Messages

Adds an icon on the spaces toolbar to quickly open Google Messages

Rated 5 out of 5 stars (3)
228 users

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
177 users

telegramwebapp

Adds browser action icon to toolbar to open Telegram. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/telegram-button/

Rated 3 out of 5 stars (2)
81 users

skypewebapp

Adds browser action icon to toolbar to open Skype. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/skype/

Rated 3 out of 5 stars (2)
48 users

PowerFolder

Power Folder add-ons tool is used for large attachment in Mozilla Thunderbird extension.

Rated 4 out of 5 stars (2)
42 users

Netiquette checker and wrapper

RFC 1855 compatible as well as Epita compatible.

This Addon provide a mail checker and an auto 72 column wrapper.
What is checked:
- Subject
- Greeting
- Body
- Salutation
- Quoting
- Signature

Rated 3 out of 5 stars (1)
35 users

AI Email Assistant

Automatically generate email responses using AI through an external API integration. This add-on sends emails to an API and inserts the AI-generated response into your reply.

Rated 5 out of 5 stars (1)
27 users

Beeper Thunderbird Add-on

A simple add-on with a button in the Spaces toolbar.

I created this by reverse engineering one of the many good add-ons in the Mozilla store and replaced the URL with chat.beeper.com and a logo.

Requires an account with beeper.com

Rated 5 out of 5 stars (1)
20 users