Mark Read on Tab Open

Mark messages as read when you open them in tabs.

addy.io / AnonAddy for Thunderbird

Adds a button to the message composition window which updates recipient addresses to route the outbound message through addy.io or a self-hosted AnonAddy server, so your real, private email address isn't exposed to recipients.

Discord - Quick Access

Quick Access to Discord in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

eMail Address Finder

This finds all email addresses in Body, From, & CC fields.

It will then put them all into a single menu.

You can click on the menu & copy the address.

For those wrangling email addresses all day, it's a massive time saver.

Proton Mail - Quick Access

Quick Access to Proton Mail in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

ChatGPT Addon

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

iCanban - Kanban with ICAL

Undo Button

Adds an Undo button to Thunderbird compose toolbar

AutoReplace

This AddOn offers a function of autocorrection / auto text replacement. You can save a shortcut and a replacement and it will replaced automaticly if you type your new eMail text.

Account Check

Checks account settings against those listed in the Thunderbird autoconfig database and offers to fix settings that don't match. This is the same check performed when setting up an account.

PrettyBlockquote

The add-on ensures that the quoted text in your reply is clearly highlighted with a vertical blue line, even when viewed by recipients using different email clients like Gmail or macOS, by using inline CSS on the blockquote HTML tag.

Trello - Quick Access

Quick Access to Trello in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

Open in XPS | XPSLogic

U kunt met deze extensie tickets en taken openen door middel van de knop open in XPS

Er moet wel eerst een client worden ingevuld dit kunt u invullen onder opties

j-lawyer.org-Thunderbird-Extension

Sendet E-Mails an einen j-lawyer.org Server

Note: This extension saves messages on a j-Lawyer.org server. Sensitive data may be transmitted. Depending on the type of connection, this data may also be unencrypted.

Redo Button

Adds a Redo button to Thunderbird compose toolbar

ansitel Click-to-Dial

This plugin will call a selected number by clicking the right mouse button.

BorderColors D

Shows a colorful border around the "New Message" window, so you can tell different identities apart.

Builds on the original BorderColors and the "GT" version, adding different border styles.

Console messaging example

Console messaging example add-on

Header Tools Improved

Allows to modify headers and source of messages

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.