Privacy and Security
OpenPGP message encryption and authentication for Thunderbird.
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
Confirm E-mail address before sending mail
Check the message contents and addresses before you send the message...
DKIM Verifier Featured
Verifies the DKIM-Signature of an e-mail.
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).
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).
Confirm mail address and attachments based on flexible rules.
Identity Chooser helps you to always use the correct identity when composing a new email.
Remove comment, display name from addresses before sending mail.
This add-on is a fork of Auto Address Cleaner.
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.
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.
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
Asks for the master password at startup (fixes multiple password prompt)
Auto Address Cleaner Requires Restart
Removes comment, display name automatically from addresses before sending mail.
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Turn on/off the alert shown when new message arrives.
Saved Password Editor Requires Restart
Adds the ability to create and edit entries in the password manager.
Secure Addressing Requires Restart
This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.
Master Password+ Requires Restart
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows