Federal email relay may operate behind the scenes, but it is now foundational to mission delivery, enabling agencies to send millions of system-generated messages daily — from eligibility notices and appointment reminders to security alerts and AI-driven communications that directly impact public trust. As agencies modernize with cloud platforms, automation and AI-enabled systems, legacy relay infrastructures built for static, on-premises environments are increasingly strained by dynamic content generation, expanding sending sources and stricter authentication standards like DKIM and DMARC. The result is heightened risk around visibility, governance, scalability and compliance — with potential service disruption at scale. This white paper explores the evolving risk landscape and outlines a purpose-built modernization path with Proofpoint Federal Email Relay (FER), enabling agencies to securely authenticate, govern and scale mission-critical communications in alignment with today’s operational and security standards.