Image Preview

Image Preview is a Thunderbird extension that allows you to preview image attachments and embedded images from email messages in a convenient popup window.

Templates Reply

Templates Reply is a completely free and open-source extension that helps you create, manage, and reuse message templates directly from your compose window.
It’s designed for simplicity and convenience — no sign-ups and no data collection.

Font PT Selector

Permette di applicare la dimensione in punti anziché in pixel.

In attesa che il team Mozilla modernizzi l'editor dei messaggi per un uso aziendale, spero che questa estensione vi sia utile!

Search in Everything

Right-click any text in an email to search your computer using Voidtools Everything.

AI Mail Support

Add-on designed to enhance email management for both personal and professional use, integrating a set of adanced AI (LLM) features to optimize the email management experience.

Birdbox

Maintain your favorite websites as spaces within Thunderbird

Allday Tasks

Thunderbird lacks the ability to create and manage allday tasks. This add-on adds these capabilities.

DeepL-Write for selected text

Unofficial DeepL Write extension for Thunderbird.

addy.io - Easy Reach

An extension for Thunderbird that allows you to access addy.io.

F9 Hides the Folder Pane

Press F9, or your favourite shortcut, to toggle the visibility of the Folder Pane

Reply with Attachments

Automatically copies attachments from the original email.
Skips S/MIME certificates and inline images.
Optional dialog to include attachments.
Optional blocklist for attachments to exclude.

Thunderbird Send

[IMPORTANT] This is a pre-release version Thunderbird Send. We will gradually open it for beta testing.
This add-on is built and maintained by your friends at Thunderbird.
Stay tuned to updates on thunderbird.net

Thunderbird-CloudLink

Inserting file link to mail with optional password and expiration date

Search Selector

Плагин для выбора поисковой системы при поиске выделенного текста.

TagOnCompose

This add-on allows you to specify tags when composing a message, which are then assigned to the message saved in the Sent folder.

TodayReplacer

Ersetzt [[TODAY]] beim Senden durch das Datum im gewünschten Format.

New message folder navigation

A Thunderbird add-on designed to help navigate through folders containing new emails received using keyboard shortcuts and a menu (newly received emails, emails whose subject has not been viewed).

Made in collaboration with Grisous.

AI Mate

Provides a compose button in Thunderbird that creates AI-powered email replies with OpenAI. Offers settings for API key, model choice, and customization options.

Message Sent Sound

I missed an acoustic notification when an e-mail was sent and it seems (at least on MacOS) this is no native Thunderbird feature. So I created this quick, little AddOn which allows you to set an MP3 file that will be played if your message was sent.

Double Click Test