Add-ons
Privacy and Security
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POW -- Plain Old Webserver
Requires Restart
Turn the web on its head with the Plain Old Webserver (POW), which adds a server to your browser.
Sensitivity Header
Requires Restart
Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.
No longer maintained: See below.
ToggleFullHeaders
Requires Restart
Allows you to customise the message panel buttons to add a "Toggle Headers" button that will switch between showing and hiding the full headers.
Clear History Button
Too Many Recipients
Requires Restart
Contourne la limite du nombre de destinataires/e-mail des serveurs SMTP.
Gets around the limit on the number of recipients/e-mail of SMTP servers.
Evita la limitación de número de destinatarios/e-mail del servidor SMTP.
Mailsleuth
Requires Restart
Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!
MetaClean for Thunderbird
Removes metadata and hidden data in email attachments preventing the leakage of confidential information that occurs in this type of communication and avoiding possible economic and reputational damages derived from the malicious use of metadata.
Saved Password Editor
Requires Restart
Adds the ability to create and edit entries in the password manager.
Force Authentication at Startup.
Requires Restart
Always ask password and hide UI at the startup.
Extensor
Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.
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.
Don't Send Linked Files
Requires Restart
Prevents sending of linked files if they are file: URLs.
Reply All Control
Requires Restart
Allows you to disable the ability to use Reply All when your email address does not appear in the To: or CC: fields. This usually means you've been BCC'd and Reply All might reveal the sender's sinister plot.
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".
Lock The Text
Requires Restart
Encrypt your text data in browser before you submit it to a network
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.
Certificate Patrol
Requires Restart
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
TracEmail
Requires Restart
A tool to raise awareness on email privacy. Visualizes the estimation of the path of your email messages on an interactive map. You can see which countries might have taken a copy of the message.
To create your own collections, you must have a Mozilla Add-ons account.
