The Essential Guide to Retiring the SEG
Explore why organizations are retiring third-party secure email gateways as layered email security becomes essential in modern cloud environments.

Secure email gateways were built for a different era. As organizations shifted to cloud providers like Microsoft 365 and Google Workspace, attackers adapted, moving away from payloads and static indicators toward abuse of trusted business workflows and human behavior.
At the same time, cloud email platforms now provide strong baseline gateway protection. This has left many security teams managing duplicate controls that add cost and operational burden without reducing exposure to modern attacks.
The Essential Guide to Retiring the SEG provides a practical, architecture-first framework for evaluating whether a third-party secure email gateway still adds business value, and how to modernize email security with clarity and confidence.
Download The Essential Guide to Retiring the SEG to learn:
- Why many modern attacks bypass gateway inspection
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How native cloud protections support a layered email security model
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How to evaluate whether a third-party SEG still adds value
How retiring the SEG impacts day-to-day security operations and migration planning
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After viewing this resource, you are eligible for 1 CPE credit through ISC2.







