Yesterday Gmail announced on their blog they would be pushing out some new UI to users to show the authentication and encryption status of email. They are trying to make email safer. There are a number of blog posts on WttW for background and more information. TLS and Encryption Protect your email with TLS Cryptography and Email M3AAAWG Recommends TLS The short version is that TLS is encryption...
February 10, 2016
Gmail showing authentication info
10February