Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Privacy and Security
Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
This extension allows you to choose the identity of your new email from a popup menu directly from the Write button. This feature behaves in a similar manner as the Get Mail pulldown menu. In addition, the default behavior of the Write button is...
GProxy lets you set and clear GPass local proxy in Firefox and Thunderbird, and do more.
Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?
Gives an option to show the master password on input
Sets message security (sign/encrypt) when sending or saving messages based on recipients' address book entry's field "Custom1".
Report spam and ham to IronPort - originally written for our MailSentry hosted IronPort customers, it can be used by anyone who has their email filtered by an IronPort appliance.
Get messages for the account which is bound to the identity then send the message when you click the toolbar button or the menu item. If your SMTP sever authenticates using POP(IMAP) before SMTP, the extension is useful.
Configures Mozilla for work with certificates issued by InfoNotary Plc.
Check if your emails arrived TLS-encrypted (and which corporations were able to read it nevertheless)
Simple proxy manager
- Change proxy with two clicks
- Import and export proxies lists
- Manually add, delete and edit proxies
- Automatic authentication on proxies (bypass popup with login and password)
- Proxysel replacement
Control cookie permissions.
Use MS Fingerprint Reader with Firefox and Thunderbird...
Password Exporter No Restart
This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Allows recipients to cancel their newsletter subscriptions in the thunderbird interface.
Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.
Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
This add-on is not compatible with your version of Thunderbird because of the following:
- Add-on uses binary components.