While it would be great for mailbox providers to be able to trust the mail based on your sending domain right off the bat, anyone who’s gotten a spoofed email that they thought was legitimate knows that isn’t always the case.

That’s where authentication comes into play. One of the more technical aspects of email, email authentication, is a series of technical solutions aimed at helping MBPs with the complicated task of delivering only legitimate emails from your domain to the inboxes of their users while refusing emails sent by anyone pretending to be you. We explore this critical subject with email veteran Matthew Vernhout.