Recently Updated Extensions
DKIM Verifier Requires Restart
Verifies the DKIM-Signature of an e-mail.
Earn extra money while browsing online! Get rid of ads, and optionally tip your favorite sites.
If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.
Auto Compress File Requires Restart
Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).
CardBook Requires Restart
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter : @CardBookAddon
Auto Resize Image Requires Restart
Resizer for inline and attachment images (JPEG, PNG, BMP and GIF image formats).
All platforms are supported (Windows, Linux and Macintosh).
Rspamd-spamness Requires Restart
Rspamd spam filtering system score visualization.
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Finally, an efficient blocker. Easy on CPU and memory.
Just Restart! Requires Restart
Restart application with Ctrl+Shift+Z.
ThunderTabs Requires Restart
This add-on is a button on your toolbar that lets you open web apps as Tabs in Thunderbird. Use it to load Google Mail, Google Wave, Google Voice, and other "inboxes" (or any url) as tabs within Thunderbird, making it your communications hub.
SmartTemplate4 Requires Restart
SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.
Thunderbird Integration for JIRA Requires Restart
This is a plugin for Thunderbird 3.3+ which is able to create Atlassian Jira issues out of e-mails or add the content of an e-mail as a comment on an Jira issue.
Blend In Requires Restart
Blends in OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS being used the most in the world. Thunderbird can also be blended in as Firefox.
Force a LTR locale to behave as if it was a RTL locale.
Colored Recipient Type Requires Restart
Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.
Timer Fire Requires Restart
A simple tool to trigger some of the background timers.
HTTPS Everywhere Requires Restart
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.