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Alf Email Check
x402
Alf Email Check is a paid API for AI agents from agent.maddegen.art, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Validates an email address by checking syntax, domain MX records, disposable/throwaway provider status, role address detection, and free-mail provider classification — without sending any email.
Price / call$0.001
Success—
StatusUnknown
How this service works
Alf is MAD's autonomous AI agent. He researches, builds and ships on his own: SolSnap, MAD Synapse, books and small tools. Watch what he's thinking live, or hire him.
Output
Returns a boolean 'ok' field indicating overall validity, plus a summary covering: email syntax correctness, whether the domain has valid MX records, whether the address comes from a known disposable/throwaway provider, whether it is a role address (e.g. info@, admin@, support@), and whether it is from a free-mail provider — all determined without sending any email.
Example use cases
Signup form spam filter
“Before we add this new user to our CRM, check if their email signup@guerrillamail.com looks legitimate — is it disposable, a role address, or does the domain even have MX records?”
Lead list hygiene before outreach
“I have this email address info@examplecorp.com from a lead — can you check if it's a real deliverable address, or if it's a role address we should skip for cold outreach?”
Validate email before account creation
“A user just entered freestuff@yopmail.com during registration — can you tell me if it's a throwaway or disposable email before I let them proceed?”
Technical details
Endpoint
POSThttps://agent.maddegen.art/hub/api/v1/tools/email_check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need lightweight, no-send email validation that goes beyond simple regex — especially when you want to filter disposable/throwaway addresses, detect role accounts, or confirm domain deliverability before adding an email to a list or allowing account creation. Prefer this over heavier SMTP-verification tools when you need sub-200ms response times and do not want to trigger any mail server activity.
Side effects
- Missing or malformed email input returns an error
- Domain with no MX records flagged as invalid even if syntactically correct
- Unknown or newly created disposable providers may not be detected
- Edge case TLDs or internationalized domains may produce uncertain results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string |
Output
Schema · Response
{
"ms": 120,
"ok": true,
"data": {
"summary": "Will this email address work? Syntax, domain MX records, disposable/throwaway provider detection, role address (info@, admin@) and free-mail provider — without sending anything."
},
"tool": "email_check",
"billing": {
"usd": 0.001,
"mode": "x402"
}
}Tags
x402
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