Email validation and email list cleaning
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, rolled into a per-address ok/risky/invalid verdict with reasons. Batch up to 25 email addresses per call. Domain-level DNS only, no SMTP mailbox probe. Keyless.
30000 (raw units)
price
60
calls / 30d
2
unique payers
2026-09-15
updated
Provider
api.kadec0.xyz · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "30000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"emails": "[email protected],[email protected]"
},
"type": "http"
},
"output": {
"example": {
"count": 1,
"items": [
{
"disposableDomain": true,
"domain": "mailinator.com",
"email": "[email protected]",
"freeProvider": false,
"localPart": "info",
"mxFound": true,
"mxRecords": [
{
"host": "mail2.mailinator.com",
"priority": 10
}
],
"normalized": "[email protected]",
"reasons": [
"disposable/throwaway domain",
"role account (info@)"
],
"roleAccount": true,
"syntaxValid": true,
"type": "email_validation",
"verdict": "risky"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"emails": {
"description": "comma-separated email addresses, up to 25 per call (a single address works too)",
"type": "string"
}
},
"required": [
"emails"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.kadec0.xyz/v1/email-validate" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.kadec0.xyz/v1/email-validate");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.kadec0.xyz/v1/email-validate")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/346.json, and this resource appears in /discovery/resources and /discovery/search.