Add-ons
Privacy and Security
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DKIM Verifier
Verifies the DKIM-Signature of an e-mail.
14,849 users
Most Popular See all »
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft67,533 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).32,011 users -
Check the message contents and addresses before you send the message...20,872 users -
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).15,515 users
Top Rated See all »
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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/8,184 users -
Adds the ability to create and edit entries in the password manager.280 users -
Adds optional columns to the Thread Pane to allow sorting email messages by:
* Full sender address -- e.g. "[email protected]"
* Sender's domain -- e.g. "example.com"
* Sender's local part -- e.g. "someone"
* Sender's TLD -- e.g. ".com"6 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft67,533 users
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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.2,822 users
Recently Added See all »
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Finally, an efficient blocker. Easy on CPU and memory. uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker that blocks ads, trackers, coin miners, popups, annoying anti-blockers, etc. in your feeds.4,181 users -
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.62 users -
New Bing isn't just for Edge anymore. Anywhere you want27 users -
turns thunderbird into firefox (powered by mojeek)0 users
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Encrypt any file, any text, and share via any medium, any time24 users -
Modern encryption in Thunderbird - powered by Rust, rage and WebAssembly7 users
See all 174 extensions in Privacy and Security »
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