Heuristic email validation to run before sending: catches invalid syntax, dead domains (no MX/A records), disposable inboxes, role-based addresses (info@, contacto@, sales@), and addresses already on your project's suppression list. Use it to clean a list before a broadcast and keep your bounce rate low.

No mailbox-level (SMTP) probe is performed, so a deliverable verdict is not a delivery guarantee — it means no negative signal was found. Treat risky addresses with care and drop undeliverable ones.

Accepts a single email or an emails batch (max 100 per request).

{
  "email": "maria@example.com",
  "emails": [
    "maria@example.com",
    "info@deaddomain.example"
  ]
}