Add-ons
Privacy and Security
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DKIM Verifier
Verifies the DKIM-Signature of an e-mail.
32,545 users
Most Popular See all »
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft78,819 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).54,059 users -
Check the message contents and addresses before you send the message...18,342 users -
Ajoute une fonction pour signaler, en un clic, les e-mails que vous considérez comme indésirables ou frauduleux à Signal Spam.
L'extension vous alerte si vous consultez un e-mail contenant des liens vers un site répertorié comme frauduleux.15,491 users
Top Rated See all »
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Adds the ability to create and edit entries in the password manager.137 users -
Adds optional columns to the Thread Pane to allow sorting email messages by:
* Full sender address -- e.g. "someone@example.com"
* Sender's domain -- e.g. "example.com"
* Sender's local part -- e.g. "someone"
* Sender's TLD -- e.g. ".com"2 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft78,819 users
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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.492 users -
Removes comment, display name automatically from addresses before sending mail.194 users
Recently Added See all »
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Makes long URLs in received mail fully clickable, also where Thunderbird shows no link at all or only half a link. Repaired links are marked, links that hide their real destination are blocked.1 user
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ThunderAI Privacy is a Thunderbird add-on, designed to add privacy features to ThunderAI.15 users -
迷惑メールの「どこが」「なぜ」怪しいのかを、メールの中で示します。判定はすべて PC の中で行い、メールの内容を外へ送りません。2 users -
Guards your inbox against look-alike characters: highlights non-Latin letters, mixed-script homographs and invisible Unicode controls, and flags addresses that contain non-Latin characters or an unfamiliar domain.1 user -
Thunderbird Cert Medic Free scans saved SSL/TLS certificate exceptions, identifies orphaned entries, and safely cleans one eligible exception at a time with verified backup and Undo.1 user -
Generates QR codes from links in emails to easily scan and verify them with the VeroQR app.1 user
See all 266 extensions in Privacy and Security »
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