Domain authentication
SPF, DKIM and DMARC design that protects domain identity and gives receiving systems clear, aligned authentication signals.
Email security & infrastructure
Secure email starts with the right foundations.
Mercury Grid helps teams authenticate, protect and operate dependable email systems. We make complex mail infrastructure clear, resilient and easier to manage.
Our expertise
Practical protection across the mail lifecycle
Independent guidance and carefully operated infrastructure, built around measurable controls.
Infrastructure reviews
DNS, TLS, mail flow, bounce handling and reputation controls reviewed as one connected delivery system.
Operational protection
Suppression, complaint response and abuse monitoring designed to keep sending controlled and accountable.
Need help with email security?
Tell us what you are building or where your mail setup is getting stuck. We will help you understand the risks and the most practical next step.
Privately operated infrastructure · Not an open relay · No public registration