Privacy and Security

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OpenPGP Alias Updater

Updates the local OpenPGP Alias file from a server to simplify encryption for mailing lists, or email aliases in an organizational environment.

Please make sure config parameter "mail.openpgp.alias_rules_file" is set to "openpgp_alias.json".

Rated 5 out of 5 stars (1)
25 users
Added May 19, 2021

SPAM Check for OCN

- SPAM Header Checker for OCN(Japanese Internet Provider)
- This plugin looks at the header of the mail and assigns a "junk mail" mark.
- Only if the header (X-CON-SPAM-CHECK) of the mail is set to 100%, it will be marked as "spam".

Not yet rated
23 users
Added March 7, 2021

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 (4)
194 users
Added Dec. 17, 2020

Safelink removal

Replace URLs which have been rewritten by Office 365 Advanced Threat Protection with the original URL.

Not yet rated
87 users
Added Oct. 6, 2020

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 (2)
349 users
Added Oct. 6, 2020

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
166 users
Added July 7, 2020

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 3 out of 5 stars (2)
56 users
Added May 14, 2020

Disable Signature Requires Restart

Allows to disable the S/MIME signature of messages. Afterwards, these messages are no longer recognized as signed and their attachments can be deleted or detached.

Rated 5 out of 5 stars (1)
3 users
Added Jan. 23, 2020

Un-Safelinks Requires Restart

Replace URLs which have been rewritten by Office 365 Advanced Threat Protection with the original URL.

Not yet rated
4 users
Added Oct. 23, 2019

Auto Address Cleaner T

Remove comment, display name from addresses before sending mail.

This add-on is a fork of Auto Address Cleaner.
https://addons.thunderbird.net/thunderbird/addon/auto-address-cleaner/

Rated 5 out of 5 stars (4)
5,930 users
Added Oct. 16, 2019

Autocrypt Requires Restart

E-Mail encryption that gets out of your way. Compatible with Autocrypt and OpenPGP.

EARLY ACCESS, MAY CONTAIN BUGS!

Caution: This extension can not be used together with Enigmail. Please remove Enigmail before installing.

Rated 4 out of 5 stars (10)
30 users
Added Aug. 13, 2019

X-Spam-Score Column Requires Restart

Adds a column for the X-Spam-Score header.

Rated 5 out of 5 stars (1)
14 users
Added July 10, 2019

Report Phishing Requires Restart

Report Phishing is an Add-on for Thunderbird that makes it easy to report phishing emails. Reported emails are analyzed for malicious links that are then sent to security companies for blocking and mitigation.

Not yet rated
0 users
Added July 1, 2019

SPAMBEE

Report any unsollicited email (SPAM, Phishing, ...) to SPAMBEE.
Get an alert if you open an email containing a URL already known as fraudulent.
All reports are anonymized, no registration is required.

Rated 5 out of 5 stars (2)
165 users
Added May 16, 2019

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)
181 users
Added Sept. 4, 2018

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 (4)
394 users
Added June 28, 2018

Changelogger

Gets changelogs for updated addons

Not yet rated
16 users
Added June 26, 2018

KeeBird Requires Restart

Use KeePass Password Safe to manage your login credentials.

This is the replacement for the KeeFox extension for Thunderbird.

Rated 4 out of 5 stars (9)
122 users
Added May 14, 2018

Esign Requires Restart

Электронная подпись для сообщений в Thunderbird на основе API клиента "ГУЦ"

Rated 5 out of 5 stars (1)
0 users
Added April 5, 2018

Classic Password Editor Requires Restart

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

Rated 4 out of 5 stars (10)
175 users
Added Oct. 23, 2017