Since the 90's Email has quickly become the global standard for electronic communication. So much so that it's basically impossible to function in modern society without an email address. But modern email is a completely different beast to the email of the 90's.

In this talk we'll go beyond basic SMTP, POP3, and IMAP and dive deeper into modern additions like DMARC, MTA-STS, TLS Reporting, BIMI, DNSBLs, S/MIME, and much more. We'll also cover the recent SMTP Smuggling attack method and the mitigations.

Finally, we'll discuss why protocol design is difficult and time consuming. We'll get insight into the many reasons email has endured, and whether we can and should build better protocols in the face of the network effect.