Anything that helps integrate Thunderbird with the KDE Desktop
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.
Allows bidirectional access to Google Calendar
Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.
A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...
Collector's Note Not specific to KDE but added here because it works so well in KDE. Only gripe is to restore from tray you have to learn to use mouse wheel rather than having the option of a click or double click.
Extracts all attachments from selected messages and then can delete, detach or mark-read.
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
British English Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey by David Bartlett.
To enable, right-click in a multi-line text box, select "Languages", then "English / United Kingdom".
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 and Seamonkey >= 2 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.
Theme with Tango icons for Thunderbird.
Collector's Note Excellent theme whether you use the Tango project or not. Nice clear tastefully coloured icons.
This add-on provides a visual indicator of new Thunderbird mail availability in supported clients (Firefox, Sunbird) and Thunderbird itself. Note: you MUST install this add-on in BOTH Thunderbird and supported clients as there are both client AND ser...
Email Bookmarks are here ! ... eMark your important emails.
Do you have an email that will need to revisit/attend later on ? Would you like to keep it handy and get it with a simple click ? Bookmark your important emails with the eMarks addon.
An Oxygen icon theme for Thunderbird 3.1 and Lightning 1.0b2
Collector's Note My currently installed theme, good integration with Oxygen theme
A childish and colorful theme for Thunderbird with menu icons, and a fresh look inspired by KDE's Plastik interface...
Collector's Note I've not used this myself but if you use the Plastik theme on KDE you will like this.