MTA-STS Hosting
Enforce TLS encryption for all inbound email. Hosted on our global edge network with automatic certificate management.
What is MTA-STS?
MTA-STS (Mail Transfer Agent Strict Transport Security) is a protocol that enables domain owners to require that inbound email connections use TLS encryption.
Without MTA-STS, email servers use "opportunistic TLS"—they try encryption but fall back to plaintext if it fails. This leaves your email vulnerable to downgrade attacks.
MTA-STS Policy Example
This policy tells senders: "Only deliver to these MX hosts, and only over a valid TLS connection."
Fully managed MTA-STS
We handle the hosting, certificates, and DNS configuration. You get enterprise-grade email encryption with zero maintenance.
Global Edge Network
Your MTA-STS policy is served from our worldwide edge network for fast, reliable delivery.
Auto Certificates
SSL certificates are provisioned and renewed automatically. No manual certificate management required.
One-Click Setup
Enable MTA-STS from your dashboard. We generate the policy and provide the DNS records to add.
Policy Modes
Start with "testing" mode to monitor without blocking, then upgrade to "enforce" when ready.
TLS-RPT Integration
Receive reports when senders fail to establish secure connections. Identify issues before they impact delivery.
99.99% Uptime
Enterprise SLA with guaranteed uptime. Your MTA-STS policy is always available when senders need it.
Enforce email encryption today
MTA-STS hosting is included with Basic plans and above.