The founders of Lavabit and Silent Circle have started a new Kickstarter Project to develop a protocol for default, user-friendly, end-to-end encryption of email. They are calling it Dark Mail, "because Black Mail has bad connotations."
I am supporting this project. I encourage you to as well. Find out more about it here: http://kck.st/HrENd0. The window to sign up closes November 22nd.