H

Hugen · Mailcheck Validate

by Hugen

POSTBaseSolana

$0.01

per call · USD Coin on Base

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana

Endpoint

POST https://mailcheck.hugen.tokyo/mailcheck/validate

16

Calls / 30d

2

Unique payers / 30d

Sep 10

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://mailcheck.hugen.tokyo/mailcheck/validate", {
  method: "POST",
});
const data = await res.json();
cURL
curl -X POST \
  "https://mailcheck.hugen.tokyo/mailcheck/validate" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "checks_performed": [
    "syntax",
    "mx",
    "disposable",
    "free",
    "role",
    "typo"
  ],
  "did_you_mean": null,
  "domain": "gmail.com",
  "email": "user@gmail.com",
  "is_disposable": false,
  "is_free": true,
  "is_role_based": false,
  "mx_found": true,
  "mx_records": [
    "gmail-smtp-in.l.google.com"
  ],
  "score": 0.95,
  "status": "valid",
  "syntax_valid": true
}

Payment details

Pay to0x29322ea7ecb34aa6164cb2ddeb9ce650902e4f60
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana
Schemesexact

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