WAKiMail is licensed under the 3-clause BSD license.
WAKiMail is now a maven3 project, so building has been drastically simplified. However, you need to setup Android for maven first. Have a look at the Maven Reference for a great tutorial on how to do this.
After this is done, all you need to do in order to build this application is:
# Build the APKs. mvn clean install # Install on your emulator or connected device. mvn android:deploy android:run
Big thanks to BugSense for providing excellent crash analytics for free.