Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Recently Updated Extensions
Prevents to save passwords.
UI Text Overrider No Restart
Provides ability to override UI elements' label, tooltip text, etc.
Provides global user stylesheet.
Disable about:config feature of Firefox and Thunderbird.
Applies only minor updates of the application.
Dictionary for recipient No Restart
Sets the spell check dictionary based on the first recipient
Provides ability to change status of specific addon (enabled/disabled).
Classic Toolbar Buttons No Restart
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.
Beta builds on versions page!
Send text and images to Microsoft Office OneNote from firefox. With section dialog, we can select an OneNote section to store page with title.
Allows URI texts written in webpages to be loaded by double clicks.
RemindIt No Restart
Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.
This addon adds awesome statistics to your beloved Thunderbird!
Mail Redirect Featured
Allow to redirect (a.k.a. "bounce") mail messages to other recipients.
S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.
New Feature: Language learning!
Squared Australis Tabs (Tb) No Restart
A small and simple extension, which replaces the curved tabs of the Australis design with squared ones, similar to Thunderbird v14 and prior.
VCard Addressbook : a new addressbook for Thunderbird based on the VCARD standards
True "Send Later" functionality to schedule the time for sending an email.
Follow up for Thunderbird E-Mails. Lightning or other AddOns are not required. Set a reminder by adding a label or by context menu and let mailmindr remind you.