Add-ons
Privacy and Security
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Mail Merge
Create and Save or Send Multiple Individual and Personalized Messages from a Draft
FileLink provider for Send
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).
DKIM Verifier
Confirm-Address
Signal Spam
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).
uBlock Origin
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.
Auto Address Cleaner
Allow HTML Temp
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
Identity Chooser helps you to always use the correct identity when composing a new email.
keepassxc-mail
FlexConfirmMail
ReplyAsOriginalRecipientUp
When you reply to a mail sent to your personalized address (postfix/qmail/gmail extensions) such as john.doe+contactname@example.com, "From:" is replaced by your personalized address rather than your simple address.
Enigmail
Helper tool to migrate your keys and important settings from Enigmail to Thunderbird 78.
MailHops
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
WarnAttachment
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.
Check before sending email
Before sending an e-mail, a pop-up window clearly displays check items such as the destination address, body text, and attached files, prompting the sender to confirm before sending the e-mail.
Correct Identity
Ever sent mail from the wrong email address because you forgot to select the correct identity?
TORPEDO - TOoltip-poweRed Phishing Email DetectiOn
TORPEDO is a tool for recognizing untrustworthy links (phishing). Move the mouse pointer over a link in your email. TORPEDO displays the correct web address in a tooltip and helps you to analyze it.
SPAMBEE
Report any unsollicited email (SPAM, Phishing, ...) to SPAMBEE.
Get an alert if you open an email containing a URL already known as fraudulent.
All reports are anonymized, no registration is required.
To create your own collections, you must have a Mozilla Add-ons account.
