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AgentUtility Email Deliverability Checker
x402
AgentUtility Email Deliverability Checker is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Validates an email address for deliverability by checking format, MX records, temp-mail risk, role mailbox risk, and SPF/DMARC/DKIM authentication records without contacting the recipient mailbox.
Price / call$0.005
Success—
StatusUnknown
How this service works
Checks email deliverability by validating address format, MX reachability, temp-mail risk, role mailbox risk, and SPF/DMARC/DKIM authentication records without contacting the recipient mailbox. Use it as an email deliverability API, deliverability score, or inbox readiness domain check.
Output
Returns a structured deliverability assessment including: overall deliverability score, format validity flag, MX record reachability status, temp-mail/disposable address risk flag, role mailbox risk flag (e.g. info@, admin@), and individual SPF, DMARC, and DKIM authentication record statuses — all without contacting or pinging the actual recipient mailbox.
Example use cases
Pre-send list hygiene check
“Before I send this marketing campaign, check if sarah.johnson@prospectdomain.com is deliverable — I need to know if the MX records are live, if it's a disposable address, and whether the domain has proper email authentication set up.”
CRM lead qualification
“I just got a new lead who signed up with the email noreply@bigcorp.com — can you tell me if that's a real deliverable address or a role mailbox I shouldn't bother reaching out to?”
Onboarding email validation
“A user just registered with the email temp123@guerrillamail.com — check if this is a temporary or throwaway email address and whether the domain has proper MX records before I confirm their account.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/email-deliverabilityWhen to prefer
Choose this endpoint when you need a privacy-safe, non-intrusive deliverability check that does not ping the recipient mailbox — ideal for pre-send list validation, CRM hygiene, onboarding flows, or lead scoring. Prefer this over SMTP-based verification tools when avoiding false positives from catch-all servers matters, or when checking authentication records (SPF/DMARC/DKIM) is part of the requirement. The x402 micropayment model makes it cost-effective for per-address spot checks in agentic workflows.
Side effects
- Invalid or malformed email address input returns a format validation error
- Domain with no MX records returns unreachable status
- DNS lookup timeout may return inconclusive MX or authentication record results
- Unknown or private domains may return partial results with limited SPF/DKIM data
- Payment failure via x402 protocol results in 402 response and no deliverability data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"risk": "low",
"email": "support@example.com",
"domain": "example.com",
"mx_records": [
"10 mail.example.com."
],
"is_disposable": false,
"is_role_account": true,
"can_receive_mail": true,
"verification_level": "domain_dns_no_mailbox_probe",
"deliverability_score": 92
}
}Tags
x402
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