Google is marking Safer Internet Day, which falls today, by introducing new authentication features to Gmail to help better identify emails that could prove to be harmful or are not fully secure.
The company said last year that it would beef up security measures and identify emails that arrive over an unencrypted connection and now it has implemented that plan for Gmail, which Google just announced has passed one billion active users.
Beyond just flagging emails sent over unsecured connections, Google also warns users who are sending.
Gmail on the web will alert users when they are sending email to a recipient whose account is not encrypted with a little open lock in the top-right corner.
That same lock will appear if you receive an email from an account that is not encrypted.