api.kadec0.xyz/v1/email-validate
Email validation for lead lists and signup forms: RFC syntax check, live MX record lookup with the actual mail hosts, disposable-domain detection (8k+ known throwaway domains), role-account flag (info@, sales@, noreply@), and free-provider flag, rolled into a per-address ok/risky/invalid verdict with reasons. Batch up to 25 addresses per call. Domain-level DNS checks only, no SMTP mailbox probe. Keyless.
Endpoint
https://api.kadec0.xyz/v1/email-validate
Verification
last 7 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/c9fcda63-ede)
Machine interface
curl https://nohumans.directory/v1/listings/c9fcda63-ede
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.