Privacy and Security
Adblock Plus No Restart Featured
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Adblock Edge No Restart
Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.
**This addon has been discontinued**
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.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
Bluhell Firewall No Restart
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Adds the ability to create and edit entries in the password manager.
Mail Merge Featured
Mass Mail and Personal Mail
Confirm E-mail address before sending mail
Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.
Check the message contents and addresses before you send the message...
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.
StartupMaster No Restart
Asks for the master password at startup (fixes multiple password prompt)
Removes comment, display name automatically from addresses before sending mail.
Customizations for Adblock Plus No Restart
This extension provides various customization options for the Adblock Plus user interface.
CookieKeeper No Restart
Extended Cookie Manager - Keep only wanted cookies.
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).
The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.