Privacy and Security

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Rspamd-spamness

Rspamd spam filtering system score visualization.

Rated 4 out of 5 stars (8)
921 users

Just Report It

Just Report It (https://justreport.it) is an email plugin which tackles spam the right way. Report emails straight to SpamCop, the Registrar, a custom email address or any combination in between!

Rated 5 out of 5 stars (17)
872 users

ReplyAsOriginalRecipientUp

When you reply to a mail sent to your personalized address (postfix/qmail/gmail extensions) such as john.doe+contactname@example.com, "From:" is replaced by your personalized address rather than your simple address.

Rated 4 out of 5 stars (13)
843 users

Paranoia

Check if your emails arrived TLS-encrypted (and which corporations were able to read it nevertheless)

Rated 4 out of 5 stars (16)
722 users

Unmangle Microsoft ATP Safelinks

Users of outlook.com and o365 who have Advanced Thread Protection enabled will have all URL's in emails changed to redirect them to an Microsoft filter before opening. This is a bad idea.

This plugin will change the URL back to the original value.

Rated 5 out of 5 stars (6)
708 users

SpoofDetection

Diese Erweiterung überprüft ungelesene E-Mails auf Spoofingversuche. Die E-Mails werden mithilfe von fünf unterschiedlichen Tests untersucht um deren Legitimität festzustellen. Die Tests werden einzeln erklärt auf der Einstellungsseite.

Rated 4 out of 5 stars (1)
687 users

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 (5)
620 users

ProtonMail Encryption Status

When using ProtonMail Bridge to integrate Mozilla Thunderbird withProtonMail, it's not easy to tell which emails were end-to-end (E2E) encrypted. This add-on puts an icon in the toolbar above every message to show you its encryption status.

Rated 5 out of 5 stars (6)
616 users

AlertSwitch

Simply turn on or turn off the alerts shown & sounds played when new message arrives.

Rated 4 out of 5 stars (6)
605 users

Changelogger

Gets changelogs for updated addons

Not yet rated
601 users

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 (3)
552 users

PGPGeek

Quick & easy PGP encryption / decryption tool
* Save & use many public encryption keys to encrypt mail content
* Save & use many private decryption keys to decrypt mail content

Using openPGP.js

Open Source
https://github.com/pgpgeek/pgpgeek

Not yet rated
496 users

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
285 users

Auto Address Cleaner Requires Restart

Removes comment, display name automatically from addresses before sending mail.

Rated 5 out of 5 stars (57)
241 users

Encrypt if possible Requires Restart

Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.

Rated 5 out of 5 stars (23)
226 users

List Unsubscribe

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

Rated 4 out of 5 stars (3)
215 users

Confirm-Address2 Requires Restart

Confirm E-mail addresses before sending mail.
This is forked from https://github.com/Meatian/confirm-address and works with Thunderbird 68.

Rated 5 out of 5 stars (2)
183 users

Logout

This extension adds "Logout" to the folders/accounts context menu.

After you "Logout" you will be asked again for passwords for this account (incoming and outgoing) without the need to restart thunderbird.

Rated 5 out of 5 stars (1)
176 users

EuropeanMX Spam Reporter

Train your EuropeanMX filter by reporting unrecognized spam back to us.

Rated 3 out of 5 stars (3)
176 users

Saved Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (390)
171 users