What main function do SEGs provide in terms of email security?

The primary function of Secure Email Gateways (SEGs) is to protect against unauthorized access and various types of email-based threats. This includes filtering out spam, phishing attempts, malware, and other malicious content before it reaches the user's inbox. SEGs analyze incoming emails to identify risky elements, thereby enhancing the security posture of an organization's email communications.

By employing techniques such as content filtering, threat intelligence integration, and even advanced machine learning algorithms, SEGs can effectively prevent attacks that could compromise sensitive information or disrupt communications. This proactive approach not only secures the email channel but also guards against data breaches and loss of confidentiality, making it a critical component of comprehensive cybersecurity strategies.

Other functions like sending emails directly to the cloud, providing free storage, or enhancing inbox customization do not align with the core security-focused role of SEGs. These systems are primarily concerned with safeguarding email communications rather than managing storage or offering customized user experiences.