Wichtige Addons für Thunderbird, vor allem geht es um Erhöhung des Komforts und Erweiterung der verfügbaren Tools
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.
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
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).
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)
Facilitates handling of duplicates in your address book(s). Allow to search and remove similar contacts.
Thunderbird Message Filter Import/Export is a thunderbird/mozilla extension to import/export message filters.
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.
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.
Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?
Introduces a preference that allows users to be prompted before moving folders.
Show the current plain text message in fixed-width text.