Eine automatisch erzeugte Liste meiner installierten Add-ons
If you have duplicate messages (e.g. from merging folders or downloading messages several times) you can use this tool to find and remove them from the selected folder and its subfolder by rightclicking on a folder and choosing "Remove duplicates..."
German dictionary (new Orthography) for spellchecking in Mozilla products, extended with Austrian words
Extracts all attachments from selected messages and then can delete, detach or mark-read.
Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers
Dictionary with Swiss variants of German words for spellchecking in Mozilla products
Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.
Allows several tweaks to the Thunderbird/Lightning calendar user interface including new selection styles and repeating event icons. Mimics the colors and styles found in MS Outlook.
Translates anything for you right on the page. The everygain Translator is available for Firefox and Thunderbird.
Display birthdays from the Thunderbird addressbooks as events in Lightning.
Allows to synchronise Thunderbird's addressbook with external directories/files. Every contact is exported/compared with an external file. Right now, only vCard version 2.1 is supported as export file format.
Displays icon for user agent of received mails.
SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).
Quickly get to the latest nightly build of Lightning relevant to the version of Thunderbird and the OS you're on.
ThunderCal simply gives you a toolbar button that you can use to run Google Calendar inside Thunderbird. Inspired by the ThunderWave add-on.