Almost 300 billion emails are sent worldwide every day, and the number of worldwide users continues to grow at a rate of 3% per year. By 2020 there will be 4 billion active users of email, according to the Radicati Group. Email insiders are busy developing standards aimed at addressing emails most glaring weakness: that anyone can send email as anyone else. This lack of a strong sender identity model has created an epidemic of spoofing. Email vulnerabilities have even played a disruptive role in elections, such as in the 2016 hack of the Democratic National Committee.”]