402utils · Email Check

GETBase

$0.003

per call · USD Coin on Base

Validate an email address before you accept a signup or send to it: RFC 5322 syntax, whether the domain resolves and its MX records, whether it is a disposable/throwaway domain (community blocklist), and whether it is a role account (info@, support@…). DNS is checked over DoH. No SMTP probing (intrusive and spammy), so a true 'domainExists' does not guarantee the mailbox exists.

Endpoint

GET https://402utils.com/v1/email-check

Calls / 30d

Unique payers / 30d

Sep 2

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://402utils.com/v1/email-check", {
  method: "GET",
});
const data = await res.json();

cURL

curl -X GET \
  "https://402utils.com/v1/email-check?email=user%40example.com" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "checkedAt": "2026-07-04T00:00:00.000Z",
  "disposable": false,
  "domainExists": true,
  "email": "user@example.com",
  "mxRecords": [
    "mx1.example.com"
  ],
  "roleAccount": false,
  "syntaxValid": true
}

Payment details

Pay to0xc55a2d530b53cbad1001e4afd4720b7e71f9c291

AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913

NetworksBase

Schemesexact

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