klymax402.com

● healthy general

Audit email deliverability for a domain — checks SPF, DKIM, DMARC, MX records (POST variant) -- reliability 90.1851806640625/100 per Paygent Discover

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://email-deliverability.api.klymax402.com

/.well-known/x402.json