Mat is a cybersecurity expert specializing in building and securing large-scale email infrastructures for MSP/ISPs worldwide, and enterprise-grade email routers. With deep experience in mail transfer agents, spam filtering, Mat focuses on delivering high-performance, resilient, and secure email platforms. His work spans from system architecture and deployment to ongoing threat mitigation and abuse handling. Passionate about reliable messaging systems, Mat is committed to ensuring secure, scalable, and efficient email delivery for high-volume environments.