Signup check
Every signalin one answer.
A disposable email and an address that does not exist are not two lookups for you to correlate yourself. They are one answer, with the per-signal detail underneath.
Request
curl https://api.webkitapi.dev/v1/signup \
-H "Authorization: Bearer $WEBKIT_KEY" \
-d '{
"email": "someone@mailinator.com",
"address": {"line": "3 Rue de Rivoli, 75004 Paris"}
}'Response
{
"verdict": "risky",
"reasons": ["email.disposable_domain"],
"signals": {
"email": { "verdict": "risky" },
"address": { "verdict": "deliverable" }
}
}The combination
The worst of its parts, never an average.
Averaging would let a flawless address launder a disposable email, which is exactly the pattern this endpoint exists to catch.
- The detail stays availableIf you weigh the signals differently, everything you need to decide for yourself is right there.
- A corrected address counts as riskyIt becomes deliverable once the correction is applied, and you are the one who has to apply it.
- Billed as the sum of its partsChoosing the combined call over two separate requests is never a financial decision.
- No competitor offers itThat is the reason the two are bundled, not a selling point added afterwards.
Questions
Including the awkward answers.
- What does a combined call cost?
- One email call plus one address call, taken from the matching quotas. No more and no less than the two separate requests.
- Can I send only the email?
- Yes. Every field is optional as long as one of them is present. A free trial often has only an email, a checkout has both.
- Do you block the signup for me?
- No. We return a verdict and its reasons. Refusing a signup is a business policy, and it belongs to you.