What is email security?

Email security encompasses practices, technologies, and protocols protecting email systems from threats. It covers: preventing unauthorized access, detecting malicious messages, authenticating sender identity, and ensuring message integrity during transmission.

Security operates at multiple layers: infrastructure protection (servers, networks), protocol security (authentication, encryption), content filtering (spam, **malware**, **phishing**), and user protection (training, awareness). Each layer addresses different threat vectors.

For senders, email security means: proper authentication setup, protecting sending infrastructure from compromise, maintaining reputation, and ensuring your legitimate messages reach recipients without being blocked as potential threats. Security and deliverability are deeply interconnected.