The Crypto Bone is a secure messaging system that makes sure a user's email is always encrypted without burdening the user with the message key management. Based on a GUI and a separate daemon, both ease-of-use and security are assured by a novel approach to encryption key management. While the message keys are secured by a daemon running on the Linux machine, additional protection can be achieved by using an external device for storing encryption keys. This external device can be another Linux computer dedicated to this task or a Beagle Bone or a Raspberry Pi