Email infrastructure, authentication, and header forensics — author of Email Decoded.
Plovdiv, BulgariaJoined July 2026
About
25+ years working with email infrastructure — SMTP, DNS, and everything that keeps mail actually landing in the inbox. Author of Email Decoded, a reference on authentication (SPF/DKIM/DMARC/ARC), MIME, encryption, and header forensics. Writing here about the parts of the stack most guides skip.
Available for
Guest posts on email authentication and security, technical Q&A, and pointing you to the right RFC when a bounce message doesn't make sense.