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Thunderbird Send

[Alpha Testing] Thunderbird send allows sending and receiving end to end encrypted files.

This add-on is undergoing testing and not yet available to the general public.

Rated 1 out of 5 stars (1)
20 users
Added Sept. 20, 2024

Junk Mail ByeBye

This extension identifies and protects you from spam emails, phishing emails, and other unwanted messages. It is primarily targeted towards filtering out spam in Japanese.

Rated 4 out of 5 stars (1)
90 users
Added July 20, 2024

Check before sending email

Before sending an e-mail, a pop-up window clearly displays check items such as the destination address, body text, and attached files, prompting the sender to confirm before sending the e-mail.

Not yet rated
255 users
Added June 22, 2024

Identity Selector

Always select the right identity with Identity Selector!

Rated 4 out of 5 stars (2)
17 users
Added June 13, 2024

uBlock Origin

An efficient blocker. Easy on CPU and memory. New and updated filter list added.

Rated 4 out of 5 stars (4)
156 users
Added April 25, 2024

List Unsubscribe

Adds a button to unsubscribe from newsletters and other bulk email that has the List-Unsubscribe header.

Rated 3 out of 5 stars (1)
111 users
Added Jan. 12, 2024

Safelinks Cleanup

Cleans up Outlook’s “safelinks” tracking.

Minimal code to allow for easy auditing of the add-on. The only code is:
https://github.com/Cimbali/safelinks-cleanup/blob/main/src/background.js

Not yet rated
49 users
Added Dec. 13, 2023

Clear History Button

Adds a button to launch the Clear History dialog

Rated 5 out of 5 stars (1)
84 users
Added July 20, 2023

vault56 protection

vault56 protection protects against potentially malicious attached files and links. Links are rewritten to pass through vault56 URL protection servers and checked for trackers and malicious activity.

Rated 5 out of 5 stars (2)
57 users
Added June 28, 2023

uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory. uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker that blocks ads, trackers, coin miners, popups, annoying anti-blockers, etc. in your feeds.

Rated 4 out of 5 stars (10)
8,853 users
Added April 28, 2023

Just Verify It

Just Verify It is a Thunderbird add-on that automates the scanning of email attachments with VirusTotal for malware. With over 50 antivirus engines, it provides reliable and quick results, ensuring the safety of your digital assets.

Rated 5 out of 5 stars (4)
589 users
Added April 21, 2023

New Bing Anywhere

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

Rated 2 out of 5 stars (2)
26 users
Added April 12, 2023

Cypherdog Encryption

Encrypt any file, any text, and share via any medium, any time

Not yet rated
37 users
Added Feb. 28, 2023

Arcus

Modern encryption in Thunderbird - powered by Rust, rage and WebAssembly

Rated 5 out of 5 stars (2)
14 users
Added Feb. 14, 2023

DS-BCC

Data protection extension, to avoid data mishaps with circular mails:

1. warning for e-mail with multiple recipients not in BCC (exceptions possible)
2. warning for roundmails with a different recipient domain
3. warning if PGP key is present

Not yet rated
98 users
Added Oct. 19, 2022

PGP Universal

Fixes encrypted e-mail attachment names from PGP Universal servers

Not yet rated
3 users
Added Sept. 22, 2022

EagleCloud Extension

Works along with EagleCloud Information Security product to secure sensitive information based on company policy.

Not yet rated
2 users
Added Aug. 9, 2022

TUD-CERT Phishing Report

Adds a phishing report button to the toolbar to enable members of Technische Universität Dresden to report suspicious e-mails to TUD-CERT with just a few clicks. If desired, an optional comment can be entered upon each report.

Rated 1 out of 5 stars (1)
170 users
Added May 5, 2022

acus

Update 2023: This addon will be replaced by "arcus".

Modern encryption in Thunderbird

** Currently in testing phase **
What you can do:
1. Set your secret key and automatically decrypt emails
2. Generate a new key pair
3. Encrypt plain text

Not yet rated
4 users
Added April 11, 2022

Zivver for Thunderbird

This extension automatically detects Zivver messages and decrypts them on-the-fly using the Zivver API. Messages are decrypted only when actively displayed by the user and are never stored locally.

Not yet rated
9 users
Added April 4, 2022