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B2A Email Deliverability, MX, SPF & DMARC Verifier
B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from x402-audit.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown.
Validates an email address for syntax correctness, disposable/burner provider detection, role account flags, and live DNS MX, SPF, and DMARC record checks.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://x402-audit.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object including email syntax validity, whether the address belongs to a known disposable/burner provider, whether it is a role-based account (e.g. info@, noreply@), and live DNS lookup results for MX, SPF, and DMARC records, giving a full deliverability picture for the queried email address.
Example use cases
Pre-send mailing list hygiene
“Before we send this campaign, check whether newsletter-signup@tempmail.io is a real deliverable address or a throwaway — I need to know if it has MX records and whether it's a disposable provider.”
Fraud detection on new signups
“A user just signed up with admin@guerrillamail.com — can you tell me if that's a role account or a burner email, and whether the domain even has valid MX and DMARC records?”
B2B lead email verification
“I've got a lead from someone at partnerships@bigcorp.net — can you verify that email is syntactically valid, that the domain has working MX records, and that SPF and DMARC are set up properly before we reach out?”
Technical details
Endpoint
POSThttps://x402-audit.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email health check that covers syntax, DNS deliverability (MX), authentication policy (SPF/DMARC), disposable provider detection, and role account flagging simultaneously. It is ideal for fraud prevention pipelines, pre-send list hygiene, and B2B lead qualification workflows where a live DNS check (not just a static blocklist) is required. Prefer it over simple regex-only validators when real-time DNS record verification is needed.
Side effects
- Invalid or malformed email input returns a syntax error response
- DNS lookup timeout if the email domain's nameservers are unresponsive
- Unknown or non-existent domain returns no MX/SPF/DMARC records found
- Payment required (HTTP 402) if x402 micropayment header is missing or invalid
- Rate limiting if the same email is queried too many times in a short window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate for syntax, MX deliverability, and disposable risk |
Output
Schema · Response
{
"type": "object"
}Reviews
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