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Folder Pane Toggler

Adds a toggle button to the unified toolbar to show and hide the folder pane. This is very useful when using different tabs with different folders open, and on smaller screens, or where as much space is needed as possible. This should be part of TB

Rated 5 out of 5 stars (4)
147 users

Dark Plain Text

Use dark mode styling when reading plain text emails with a dark theme.

Rated 5 out of 5 stars (4)
734 users

Freecosys - FileLink provider

Turns your huge files into short links

Not yet rated
366 users

ChatGPT - Quick Access

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

Rated 4 out of 5 stars (2)
1,185 users

Yandex Mail - Quick Access

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

Not yet rated
44 users

One-Click Forward

Forward emails directly through a dropdown of predefined recipients.

Configure recipients in settings. Use the message toolbar button "Quick Forward" to open a dropdown with your recipients and forward directly, or hold Shift to edit first.

Rated 5 out of 5 stars (1)
255 users

XRechnung-Viewer

Zeigt eine Zusammenfassung von XRechnungen / ZUGFeRD-Rechnungen der ausgewählten E-Mail (Attachments) an. Außerdem stellt es einen Bezahlcode (QR-Code) dar, der mit entsprechender App eine Überweisung mit den Daten aus der Rechnung auslöst.

Rated 5 out of 5 stars (4)
162 users

Open Google Tasks (default)

Adds an icon on the spaces toolbar to quickly open the default Google Tasks page

Rated 5 out of 5 stars (1)
263 users

Custom Headers View

Display custom email headers in the mail header toolbar. This extension allows you to make visible specific headers in the toolbar, like received, date, DuckDuckGo's duck-original- headers to show the sender's email in the original format, etc.

Rated 5 out of 5 stars (1)
76 users

AI Grammar

Helps you write emails with the Llama3 LLM (offline). Corrects grammar mistakes in your draft email.

Rated 5 out of 5 stars (1)
378 users

SCMenu

Supplementary compose menus to reply to a message by including its original attachments and to create a new email to the recipients of an existing message.

Not yet rated
52 users

Spellchecker Ladin (Gherdëina)

Spell-checking dictionary for Ladin (Gherdëina).

Not yet rated
1 user

Reply All Button

Add a "Reply All" button which never behaves like "Reply List". Intended to replace the Smart Reply button to avoid accidentally performing Reply List behavior.

Rated 5 out of 5 stars (2)
119 users

PhishNet

AI phishing detection tool

Rated 4 out of 5 stars (1)
38 users

Link Check

フィッシングメールの対策として
主に、メール内のリンク先のドメインをチェックし、
安全性を確認する。

Check the domain of the link in the email.

Not yet rated
7 users

ChartPop

Stop opening new tabs! Instantly see stock prices and mini charts by hovering over tickers on any webpage.

Not yet rated
1 user

Tbpro Addon [STAGE]

[THIS ADD-ON IS NOT AVAILABLE FOR PUBLIC USE]
This add-on is meant for internal testing of your Thunderbird Pro Add-on

Not yet rated
522 users

Nusoft GAuth

This add-on simplifies the identity authentication process when connecting to Nusoft services.

Not yet rated
2 users

Whois RDAP Lookup

The Thunderbird add-on Whois/RDAP Lookup lets you check a sender’s domain with one click: view the owner, registration, and NS servers, and quickly audit domains. It automatically updates the domain suffix list and supports 9 languages.

Not yet rated
15 users

Inline Image Resizer

This AddOn allows you to quickly resize images (like screenshots) you embed in a new mail to small, medium or large size with just a click in the composer window. This reduces e-mail size. The AddOn also estimates the size of your mail.

Not yet rated
139 users