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TD Agent Utility · Email Verification
x402
TD Agent Utility · Email Verification is a paid API for AI agents from tdagentutility.co.uk, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-16).
Validates an email address by checking syntax, DNS existence, MX records, disposable domain status, and mailbox existence
Price / call$0.002
Success—
StatusUnknown
How this service works
Independent website and deployment verification for AI agents: HTTP, DNS, TLS and Chromium screenshot evidence. Three deterministic tools, x402 V2 Base USDC.
Output
Returns a JSON object with: result_status (PASS/FAIL), syntactically_valid boolean, dns_exists boolean, null_mx boolean, mx_records array, disposable_domain flag, role_address boolean, mailbox_existence (UNKNOWN/EXISTS/DOES_NOT_EXIST), normalized_email, normalized_domain, checked_at timestamp, and a warnings array listing any issues detected.
Example use cases
Pre-send email list hygiene
“Before I send out this marketing campaign, can you check whether contact@bigcorp.io is a real, deliverable email — I need to know if the domain has valid MX records and whether it's a disposable or role address.”
New user signup validation
“A user just signed up with the email temp9284@mailinator.com — can you verify it and tell me if it's a disposable throwaway address or has any warnings I should know about before I create their account?”
B2B lead email qualification
“I scraped a lead with the email info@somestartup.co.uk — can you verify if that email address is real, whether the domain has mail infrastructure, and if it's a role address like a generic info inbox?”
Technical details
Endpoint
POSThttps://tdagentutility.co.uk/v1/email-verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, multi-layer email validation beyond simple regex checks — especially when you need DNS and MX record verification, disposable domain detection, and role address flagging in a single call. Prefer this over client-side validation libraries when building agent workflows that require reliable delivery confidence before sending messages or creating user accounts.
Side effects
- Invalid or malformed email input returns syntactically_valid: false with FAIL status
- Unresolvable domain returns dns_exists: false
- Domain exists but has no MX records returns null_mx: true
- Mailbox existence often returns UNKNOWN when SMTP probing is blocked or unavailable
- Network timeouts during DNS or SMTP checks may result in partial results
- Disposable domain databases may have incomplete coverage for newer throwaway providers
Output
Schema · Response
{
"type": "json",
"example": {
"tool": "email_verify",
"null_mx": false,
"warnings": [],
"checked_at": "2026-10-15T00:00:00Z",
"dns_exists": null,
"mx_records": [],
"role_address": false,
"result_status": "PASS",
"normalized_email": null,
"disposable_domain": null,
"mailbox_existence": "UNKNOWN",
"normalized_domain": null,
"syntactically_valid": false,
"mail_infrastructure_valid": null
}
}Tags
x402
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