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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)
201 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 (12)
439 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)
8,767 users

Render Markdown Messages

This extension renders markdown-formatted messages as rich text. It preserves the fonts and formatting of plain text messages but adds support for markdown features like lists, code blocks, etc.

Not yet rated
120 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

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

New Bing Anywhere

New Bing isn't just for Edge anymore. Anywhere you want

Rated 2 out of 5 stars (2)
20 users

Grammar, Proofreading & Spell Checker

Check the grammar and spelling directly inside Thunderbird using Wordeep technology

Rated 4 out of 5 stars (4)
670 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)
49 users

Jitsi Meet event generator

Event and link generator for Jitsi Meet service.

Rated 4 out of 5 stars (5)
304 users

AI Anywhere for ChatGPT

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

Rated 5 out of 5 stars (14)
3,862 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)
486 users

PowerFolder

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

Rated 4 out of 5 stars (2)
43 users

Mark Read on Tab Open

Mark messages as read when you open them in tabs.

Not yet rated
37 users

onedrivewebapp

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

Rated 4 out of 5 stars (1)
81 users

TransliteRussian for Thunderbird

Печатаем по русски на разных клавиатурах.
E-Mails auf Russisch auf verschiedenen Tastaturen in Thunderbird.
Typing Russian on English, German and other keyboards without thinking about the layout.

Rated 4 out of 5 stars (1)
42 users

Copy Timestamp

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

Not yet rated
47 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 (10)
1,212 users

UUID - WES

WES Solucoes Tecnologicas Ltda

Not yet rated
6 users

Paste code

Thunderbird addon creating a context menu option that pastes code beautifully in HTML messages

Not yet rated
150 users