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NetIntel Email Verification API
x402
NetIntel Email Verification API is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Verifies an email address for deliverability, format validity, MX records, disposability, and risk flags via a single GET call
Price / call$0.001
Success—
StatusUnknown
How this service works
Network intelligence API — 138 endpoints, all pay-per-call via x402 micropayments (USDC on Base or Solana mainnet). NetIntel is agent fair-trade aligned: transparent per-call pricing in USDC on Base or Solana via x402, no API keys or signup, and automatic no-charge on server errors, upstream failures, and input-validation rejections — failed calls are never billed across NetIntel's network, domain, and data-intelligence endpoints.
Output
A JSON object containing the normalized email and domain, a top-level result string (deliverable | risky | undeliverable), boolean flags for format_valid, deliverable, mx_found, disposable, role_based, free_provider, safe_to_send, smtp_checked, an array of MX record hostnames, an array of risk_flags describing specific issues, and a human-readable reason string.
Example use cases
Pre-registration email screening
“Before I create an account for this new user, check whether the email address they gave me — noreply@mailinator.com — is deliverable, disposable, or role-based so I can decide whether to allow the signup.”
Mailing list hygiene check
“I'm about to send a campaign to contact@acme.com — can you verify it's a real deliverable address with valid MX records and flag any risks before I add it to my list?”
Fraud detection on checkout
“A customer just submitted the order with billing email temp-user+1234@guerrillamail.com — can you verify if that's a throwaway disposable address or something risky I should flag before processing the payment?”
Technical details
Endpoint
GEThttps://netintel-production-440c.up.railway.app/email/verifyWhen to prefer
Choose this endpoint when you need a fast, per-call, no-signup email validation that combines format checking, MX record lookup, disposable/role-based detection, and deliverability assessment in a single call. Ideal for agents that need to screen emails at registration, before sending campaigns, or during fraud checks, especially when avoiding subscription-based email validation services. The $0.001 USDC micropayment model means you only pay for successful, valid calls.
Side effects
- Invalid or malformed email format returns an undeliverable result with format_valid: false
- Non-existent domain with no MX records returns mx_found: false and undeliverable result
- Upstream DNS or SMTP lookup failures may return risky result with smtp_checked: false
- Missing required email query parameter returns an input validation error (not billed)
- Rate or network issues at the server level return a server error (not billed)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"email": "user@github.com",
"domain": "github.com",
"reason": "ok",
"result": "deliverable",
"mx_found": true,
"disposable": false,
"mx_records": [
"aspmx.l.google.com"
],
"risk_flags": [],
"role_based": false,
"deliverable": true,
"format_valid": true,
"safe_to_send": true,
"smtp_checked": false,
"free_provider": false
}
}Tags
x402
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