Secure email gateways (SEGs) were built to stop basic, high-volume attacks that rely on known indicators of compromise. But today’s threat landscape has changed. Fueled by rapid advances in AI, attackers now use highly personalized, context-rich techniques to target human behavior—driving attacks like business email compromise (BEC), invoice fraud, account takeover, and more.

At the same time, the native security capabilities in cloud email platforms like Microsoft 365 and Google Workspace have evolved significantly. These platforms now provide strong built-in protections that, when paired with AI-native security, deliver more complete defense against modern attacks.

For many organizations, that changes the equation. Maintaining a legacy SEG often means paying twice for overlapping email security, managing complex rules and policies, and spending valuable time on manual response and remediation workflows.

Abnormal SEG Displacement Program: Abnormal AI has helped more than 550 organizations move off legacy SEGs such as Proofpoint, Mimecast, and Cisco—replacing them with a modern approach built on Microsoft 365 or Google Workspace plus Abnormal.

Our Solutions Architecture and Professional Services teams bring more than 100 years of combined experience to every engagement, guiding customers through a structured, expert-led migration tailored to their environment. The result is a simpler email security architecture, stronger protection against modern threats, and a smoother path away from legacy tools.