Facebook published numbers today that demonstrate the pervasiveness of encryption on the web. The social network said 95 percent of its notification emails are encrypted with Perfect Forward Secrecy, up from 29 percent in May. The skyrocketing numbers are due in large part to actions on behalf of providers such as Yahoo and Microsoft. Google, Yahoo, Microsoft and others moved quickly during the last 15 months of Snowden revelations to fight perceptions and intimations they were somehow complicit with government surveillance efforts. The surge in encryption deployments removes even a notion of tacit complicity.
Source: https://threatpost.com/close-to-all-facebook-notification-emails-encrypted/107821/