A few days ago, I got the new icedove package, which succeeds the not-so-free Mozilla® Thunderbird® in Debian.
The Debian User blogs about it:
But integration like this is a story of its own. Im still looking for a good lightweight groupware package which one could install to share the calendars and address books of a whole family or a small work group on a normal web presence with Sarge, PHP, MySQL, and the like. Integration with a free control panel like SysCP would be an additional plus. Recommendations, anyone?