Even in a world where businesses of all sizes look to Slack, Microsoft Teams and other enterprise social collaboration tools to improve the lines of communication between teams, it’s still going to be a long time before we see a true decline in the use of email. One of the core advantages of these new tools is the ability to prove that the person at the other end of the communication is truly who they say they are – each of these ‘modern’ communication methods require authentication and deliver a secure end-to-end channel.