A Secure Email Gateway (SEG) is a security system that filters inbound or outbound email for threats, policy violations, and suspicious content. It matters because organizations need a scalable inspection point to reduce malicious email before it reaches users or leaves the environment.
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What is Secure Email Gateway (SEG)?
SEGs may inspect sender trust, attachments, links, malware, impersonation signals, policy violations, and message-routing patterns. They are a common control for phishing defense and email-risk reduction at scale.
What Secure Email Gateway (SEG) Commonly Supports
Common uses include phishing filtering, malware detection, DLP, impersonation defense, and mail-policy enforcement.
Secure Email Gateway (SEG) vs. Direct Unfiltered Mail Delivery
A SEG adds inspection and enforcement before or during delivery. Direct delivery exposes users and systems to more unreviewed content.
Frequently Asked Questions
Why use a SEG?
Because it can remove or flag a large amount of harmful email before users need to make their own judgment.
Does a SEG eliminate phishing?
No. Some attacks still get through, which is why layered controls and user awareness still matter.
Related Cybersecurity Terms
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