Privacy and Security
Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).
Identity Chooser helps you to always use the correct identity when composing a new email.
OpenPGP message encryption and authentication for Thunderbird.
DKIM Verifier Featured
Verifies the DKIM-Signature of an e-mail.
Copy Folder Requires Restart
The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.
Remove comment, display name from addresses before sending mail.
This add-on is a fork of Auto Address Cleaner.
Check the message contents and addresses before you send the message...
Confirm E-mail address before sending mail
Confirm mail address and attachments based on flexible rules.