Gmail will soon alert users about unencrypted emails
Google Online Security Blog: New Research: Encouraging trends and emerging threats in email security: We’re constantly working to help make email more secure for everyone. These efforts are reflected in security protections like default HTTPS in Gmail as well as our Safer Email Transparency report, which includes information about email security beyond just Gmail.
To that end, in partnership with the University of Michigan and the University of Illinois, we’re publishing the results of a multi-year study that measured how email security has evolved since 2013. While Gmail was the foundation of this research, the study’s insights apply to email more broadly, not unlike our Safer Email Transparency report. It’s our hope that these findings not only help make Gmail more secure, but will also be used to help protect email users everywhere as well.