Schwarzschild Radius LLC

MTA-STS & TLS: Why They Matter

MTA-STS (Mail Transfer Agent–Strict Transport Security) helps ensure that emails sent to your domain are delivered securely, using encrypted connections. It essentially tells other email servers: “Please only deliver mail to me if you can do so over a secure TLS channel.” This reduces the risk of interception or tampering along the way.

TLS reporting gives you feedback on when emails are successfully encrypted and when they fail. This helps you spot any persistent security issues.

In plain terms: If you’re dealing with sensitive information (e.g., invoices, client details), MTA-STS means your emails have a safer journey.

Note: MTA-STS requires hosting space. Besides your domain registrar and email service, you’ll need a small web server that can host a special policy file. We can guide you through this—just keep in mind it’s a separate purchase from the domain or email provider.

For small businesses handling sensitive data or simply wanting top-notch security, MTA-STS and TLS reporting are powerful ways to ensure your brand’s communications stay confidential.

Contact Us to Get Secure