What is an Email Security Gateway (ESG)?
An Email Security Gateway (ESG) is a security solution that filters and monitors inbound and outbound email traffic to protect against threats such as Phishing, Malware, and Spam. It acts as a control layer between users and email systems.
ESG solutions often integrate with email authentication mechanisms such as SPF, DKIM, and DMARC to validate message authenticity.
What is an Email Security Gateway used for?
ESGs are used to prevent email-based attacks such as Business Email Compromise (BEC) and Domain Spoofing. They provide capabilities such as content filtering, attachment scanning, and threat intelligence integration.
Organizations rely on ESGs to strengthen Security Posture and support User Awareness Training by reducing exposure to malicious emails.
