WWHF @ Mile High 2025

Email (SMTP) is a topic where people either know it very well or not at all. I began my journey in the latter group, but after spending several months delving into the relevant RFCs, I gained a comprehensive understanding of how to abuse the email ecosystem. This knowledge culminated in the creation of a browser extension called MailFail. In this presentation, I will get you up to speed so that you can quickly identify and exploit email misconfigurations. Join me as we delve into the intricacies and quirks of email, uncovering both its complexities and its absurdities.