Encryption approaches usability

End to end encryption for messaging apps http://www.theverge.com/2016/10/4/13161224/facebook-messenger-encryption-privacy-enable

Lavabit 

http://www.theverge.com/2017/1/22/14350496/secure-email-service-lavabit-relaunches

Google makes it easier? 

https://security.googleblog.com/2017/01/security-through-transparency.html