Email Validation API
Email validation and email list cleaning. Checks each email address for RFC syntax, a live MX record lookup returning the real mail hosts, disposable-domain detection, role-account flags (info@, sales@, noreply@), and a free-provider flag,
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 193 ms
- Price
- $0.030 per call
- Paying buyers, last 30 days
- 5 (directory's own records)
- Paid calls, last 30 days
- 50
- Category
- DNS and domains
- Address
- https://api.kadec0.xyz/v1/email-validate
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/9fead48dfa96.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).