The user-friendly, lightweight, and fast email client Latest Release: 3.11.0 (News), on 20 October 2014

The AcpiNotifier plugin

The AcpiNotifier plugin handles the email LED found on some laptops. It makes it possible to see whether you have new emails from the other side of the room, without even unlocking the screen. The plugin handles the following types of laptops:
Here are a few screenshots illustrating the features: