Add-ons
Privacy and Security
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DKIM Verifier
Verifies the DKIM-Signature of an e-mail.
26,323 users
Most Popular See all »
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Create and Save or Send Multiple Individual and Personalized Messages from a Draft73,607 users -
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).50,870 users -
Confirm mail address and attachments based on flexible rules.
This is enterprise edition with less updates. Another edition for regular users:
https://addons.thunderbird.net/thunderbird/addon/flex-confirm-mail/21,870 users -
Check the message contents and addresses before you send the message...19,910 users
Top Rated See all »
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Adds the ability to create and edit entries in the password manager.162 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"5 users -
Create and Save or Send Multiple Individual and Personalized Messages from a Draft73,607 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.758 users -
Removes comment, display name automatically from addresses before sending mail.234 users
Recently Added See all »
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[THIS ADD-ON IS BEING INTERNALLY TESTED]
This add-on is meant for internal testing. We'll open invitations as soon as we know we have a great add-on0 users -
Automatically manage emails with expiration dates. Delete or move expired emails to reduce storage and environmental impact. Part of the Zero Carbon Email initiative.9 users -
Automatically fills my username, TOTP code, and password on weblogin.lancs.ac.uk.
You should enter your username, password, and TOTP secret in the options page before using this extension.1 user -
This add-on simplifies the identity authentication process when connecting to Nusoft services.1 user -
![Icon for Tbpro Addon [STAGE]](https://addons.thunderbird.net/user-media/addon_icons/989/989140-32.png?modified=396606e7)
[THIS ADD-ON IS NOT AVAILABLE FOR PUBLIC USE]
This add-on is meant for internal testing of your Thunderbird Pro Add-on719 users -
Quickly shorten links with your self-hosted YOURLS instance. Provides a toolbar button, context menu, and keyboard shortcut for a fast workflow.2 users
See all 194 extensions in Privacy and Security »
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