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ChartPop

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

Not yet rated
0 users
Added June 23, 2025

Strikethrough Button

Adds a strikethrough toggle button to the Thunderbird compose toolbar. As this is an extension, it is not an integrated component of the Thunderbird toolbar. That is why it sits at the far right on the toolbar and not next to the B/I/U buttons.

Not yet rated
0 users
Added June 23, 2025

SmartQuotes

Applies the correct smart quotes („ ... “ instead of " ... ") used in Lithuanian, German, Czech, and other Central European languages. One click fixes your entire text.

Not yet rated
2 users
Added June 14, 2025

SimplestAddon

aaaaaaaaaaaa

Not yet rated
1 user
Added June 12, 2025

Veilig Verzenden Thunderbird Add-on (via Zorgmail)

Met deze add-on verstuur je met één klik e-mail via je Zorgmail-account.

Not yet rated
1 user
Added June 11, 2025

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
3 users
Added June 9, 2025

PhishNet

AI phishing detection tool

Rated 4 out of 5 stars (1)
1 user
Added June 6, 2025

SAGE

This extension checks before sending an email that the type of the attached files is allowed and that the total size of the attached files respects a maximum limit. SAGE is the acronym for Safe Attachment Guard Extension.

Not yet rated
3 users
Added May 30, 2025

Paste Files as Attachments

This Thunderbird add-on fills the gap left by the modernized Attach-From-Clipboard add-on, which is no longer able to paste files from the clipboard as attachments after migrating away from legacy Mozilla code.

Rated 5 out of 5 stars (3)
23 users
Added May 29, 2025

Thunderbird Vericode

Automatically detects verification codes in received emails and displays a notification that you can click to copy the code to clipboard.

Rated 5 out of 5 stars (1)
7 users
Added May 28, 2025

Google Drive Quick Access

A basic Google Drive Quick Access extension that adds a Google Drive icon and allows you to quickly access it

Not yet rated
72 users
Added May 27, 2025

TidySubject

Declutter Re:, Fwd:, and EXT tags automatically.

Rated 3 out of 5 stars (2)
8 users
Added May 22, 2025

Экспорт календаря в Excel

Экспорт событий календаря в файл Excel.

Not yet rated
2 users
Added May 7, 2025

Thunder Sign Editor

Thunder Sign Editor ✍️
Visual signature editor for Thunderbird (WYSIWYG)

Thunder Sign Editor is a lightweight Thunderbird extension that lets you visually design, copy, and apply email signatures to any of your Thunderbird identities.

Not yet rated
36 users
Added May 5, 2025

FlexConfirmMail

Confirm mail address and attachments based on flexible rules.

This edition will have incompatible changes. Another edition for enterprise users with less changes:
https://addons.thunderbird.net/thunderbird/addon/flex-confirm-mail-stable/

Not yet rated
249 users
Added May 1, 2025

Search Selector

Плагин для выбора поисковой системы при поиске выделенного текста.

Not yet rated
1 user
Added April 30, 2025

Auto Capitalize Mail

Capitalizza automaticamente il testo nelle email.

Not yet rated
3 users
Added April 29, 2025

Quicktext Community Scripts

A set of Quicktext scripts maintained by the community

Rated 3 out of 5 stars (1)
279 users
Added April 25, 2025

CrossBorderScam-Canceler

This add-on (CrossBorderScam-Canceler) filters fraudulent emails by focusing on the location of the received email and analyzing the header information of the opponent's email and the links in the email body.(view in English, Japanese or German)

Not yet rated
34 users
Added April 22, 2025

Email Original

El sello que permitirá a tus destinatarios de tus correos electrónicos, validar la autenticidad y legitimidad de tus direcciones de correo electrónico, poniendo esa necesaria barrera a las posibles suplantaciones de identidad (phishing ó spoofing).

Not yet rated
1 user
Added April 21, 2025