Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Recently Updated Extensions
Verifies the DKIM-Signature of an e-mail.
Disallows to delete not-empty mail folders.
Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.
Prevents to save passwords.
Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances
Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.
Thunderbird email accounts, including contacts, connecting to Microsoft Exchange Web Services. This is a 60 day trial of a paid add-on.
This add-on is not compatible with your version of Thunderbird because of the following:
- Add-on uses binary components.
Pan No Restart
Block ads and manage proxy.
Confirm mail address and attachments based on flexible rules.
AntiGameOrigin v6 No Restart
AntiGameOrigin - the other OGame experience for all communities.
Thunderbird extension for the Todo.txt application
This is a fork of AutoProxy, which can run the latest version of Firefox.
Add-ons Manager - Version Number No Restart
Restores add-on version number inside Add-on Manager for latest builds of Firefox, Thunderbird and Seamonkey.
Rspamd spam filtering system score visualization.
All the bugs have been fixed!
Everyone needs this add-on!
Block websites you don't want the browser to get into.
Block by a whole domain name or a specific address.
Block until further notice or until a certain date.
Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.
Now also includes SSO change (multi-domain pw) and Backup + Restore.
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.
Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.
Color Transform No Restart
Adapt page colors to your taste or need. Save your favorite color scheme for automatic coloration. Comes with 18 predefined themes and 24 basic transforms for hue, saturation, lightness and opacity. For Firefox 24.0 and newer.
Colorific No Restart
Colorize entire web pages manually or automatically. With 28 customizable themes that transform hue, saturation, lightness and opacity. For Firefox 28.0 and above. NEW: Copy themes and group color properties using drag-and-drop.