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mailcheck.hugen.tokyo Email Validator
x402
mailcheck.hugen.tokyo Email Validator is a paid API for AI agents from mailcheck.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Validates an email address using 6 checks (syntax, MX, disposable, free provider, role-based, typo) and returns a 0-1 confidence score
Price / call$0.01
Success—
StatusUnknown
How this service works
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
Output
Returns a JSON object with: overall score (0-1), domain, status (valid/invalid), is_free boolean, mx_found boolean, mx_records array, did_you_mean typo suggestion string, syntax_valid boolean, is_disposable boolean, is_role_based boolean, and a list of checks_performed.
Example use cases
Example prompt
“Can you validate the email address 'john.doe@gmial.com' for me — check if the syntax is correct, whether mail servers exist for the domain, and whether it looks disposable or role-based, and give me the confidence score?”
Technical details
Endpoint
POSThttps://mailcheck.hugen.tokyo/mailcheck/validateWhen to prefer
Choose this endpoint when you need a single-call, multi-faceted email validation that covers syntax, DNS/MX, disposable detection, free-provider identification, role-address flagging, and typo correction all at once — without managing API keys or stitching together multiple services. Particularly valuable for user signup flows, lead qualification, or any agentic workflow where email quality matters and you want a simple 0-1 confidence score with per-check detail.
Side effects
- Malformed request body returns 400 error
- Network issues reaching MX DNS servers may cause incomplete MX check
- Newly created disposable domains not yet in the 5000+ domain list may pass disposable check
- Payment failure (non-payment or wrong amount) returns 402 Payment Required
- Domain with no publicly resolvable MX records flagged as invalid even if domain exists
Input
{
"email": "john.doe@gmial.com"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Output
{
"email": "john.doe@gmial.com",
"score": 0.4,
"domain": "gmial.com",
"status": "disposable",
"is_free": false,
"mx_found": false,
"mx_records": [],
"did_you_mean": "john.doe@gmail.com",
"syntax_valid": true,
"is_disposable": true,
"is_role_based": false,
"checks_performed": [
"syntax",
"mx",
"disposable",
"free",
"role",
"typo"
]
}Tags
x402
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