Free MTA-STS Policy Generator
Generate a compliant MTA-STS policy file to secure your email transmission.
Frequently Asked Questions
What is an MTA-STS policy file?
It's a text file hosted at a specific URL that tells sending servers to enforce TLS encryption.
What are the modes?
"Testing" allows you to see reports without blocking email. "Enforce" blocks email if encryption fails.
What is the MX pattern?
It specifies which mail servers match this policy. Wildcards like "*.google.com" are common.