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
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
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 38+ only (see below for details).
Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. For Thunderbird 36 and older use version 2.0.9 (see version history)
Displays icon for user agent of received mails.
Displays the contact photo/image/picture of the sender/recipient while reading or composing a message. Supports photos in a local folder and the 'Face' header for embedded photos. The add-on adds new generic photos and many styling possibilities.
Display birthdays from the Thunderbird addressbooks as events in Lightning.
It adds a button that can be put in toolbars and that open the addressbook in a new tab
This Extension implements the ManageSieve protocol for securely managing Sieve Script on a remote IMAP server...