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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 4 out of 5 stars (35)
8,194 users

CustomCSS

Allow the user to configure custom CSS that will be added to messages when edited
(new, reply and forward). The custom CSS will be added to a newly created <style>
element in the email's head.

Rated 5 out of 5 stars (4)
180 users

Joplin Export

Export your emails from Thunderbird to Joplin. To use the add-on, a running Joplin application is required (https://joplinapp.org).

Please note that this is not an official product of the Joplin team, but rather developed by a private person.

Rated 5 out of 5 stars (10)
420 users

Replaceholder

Replace placeholders with date and time as you type.
入力画面の件名、本文内の各プレースホルダを日時や曜日等の文字列に置換します。

Rated 2 out of 5 stars (1)
10 users

ChatGPT Addon

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

Not yet rated
64 users

X-Original-To Column

This addon adds a new column called X-Original-To in the message list which shows the original recipient address of the message (the contents of the X-Original-To header). This can be useful for systems with catch-all email addresses.

Rated 5 out of 5 stars (1)
31 users

Move Mail Shortcuts

Allows assigning keyboard shortcuts for moving mails to folders and jumping to the folders.

Rated 4 out of 5 stars (12)
519 users

Redo Button

Adds a Redo button to Thunderbird compose toolbar

Rated 5 out of 5 stars (1)
30 users

Dolnoserbski pšawopisny słownik

Lower Sorbian spellchecking dictionary by the Sorbian Institute.

Not yet rated
5 users

Undo Button

Adds an Undo button to Thunderbird compose toolbar

Rated 5 out of 5 stars (1)
52 users

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

Not yet rated
4 users

@Contact Mention

This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.

Rated 4 out of 5 stars (9)
890 users

Ungender

Eine Thunderbird-Erweiterung, welches Binnen-Is und Ähnliches von Webseiten entfernt. Es basiert auf der bekannten Firefox Erweiterung Binnen-I be gone.

Rated 4 out of 5 stars (5)
203 users

AI Anywhere for ChatGPT

ChatGPT enhancer - adds context menu, keyboard shortcuts, history and more!

Rated 4 out of 5 stars (12)
2,657 users

Correcteur français en orthographe simplifiée

Ce correcteur simplifie l'orthographe selon les propositions de l'association Érofa :
- Suppression des consonnes doubles inutiles : "doner"
- Simplification des mots d'origine grecque ('ph' > 'f', 'th' > 't', etc.)
- 'x' finaux remplacés par 's'

Rated 3 out of 5 stars (2)
1,869 users

ObsidianClipper

ObsidianClipper is a Thunderbird extension to clip emails to the Obsidian notetaking application. Save an email to Obsidian seamlessly with one click. Customize the format of new note titles and note layout.

Rated 5 out of 5 stars (6)
299 users

Estimez votre CO₂

Estimez votre CO₂ quand vous rédigez un courriel en un simple clic ! Pendant sa rédaction, cliquez sur l'extension afin de connaître l'émission de CO₂e générée par l'ensemble du cycle de vie. Vous aurez aussi accès à différentes équivalences utiles.

Not yet rated
55 users

Move Folder (context-menu)

Adds the "Move to" menu entry to the folders panel context menu, allowing to move a Local folder (and its content) to another.
This feature is similar to the native one within message(s) context menu ("Move To"), but it applies to the folder tree.

Rated 3 out of 5 stars (2)
430 users

PowerFolder

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

Rated 4 out of 5 stars (2)
36 users

Copy Timestamp

Copy the timestamp and/or email addresses of the sender, recipient, etc. to the clipboard in various formats.

Not yet rated
50 users