Prerequisite : Sun JRE 5, 6 or 7. Tray icon is now implemented with SWT and compatible with Java 5. You may use DavMail with an older version, but the gateway will run as a command line application.
If Java is not available, DavMail Jsmooth launcher will trigger java download and setup.
DavMail setup is straightforward, just follow the setup wizard.
Accept GPL licence:
Launch installation and start gateway:
Adjust DavMail settings : Getting started