Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
German Dictionary (new Orthography) for spellchecking in Mozilla products
Allows bidirectional access to Google Calendar
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
Access to Google contacts and synchronize them with Thunderbird address books.
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
The latest version is compatible with Thunderbird 31+ only (see below for details).
Switch the signature on/off or choose a new one from your predefined set...
Displays icon for user agent of received mails.
Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.
Display birthdays from the Thunderbird addressbooks as events in Lightning.
Removes comment, display name automatically from addresses before sending mail.
Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?
Collapse and expand quotes. Please see the extension homepage for...
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.