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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 cve-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).
Validates an email address for syntax correctness, disposable/burner provider detection, role account identification, and live DNS MX/SPF/DMARC record lookup.
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://cve-intel.agentdiet.dev/v1/mx-check)
Output
Returns a structured object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account, and the live DNS lookup results for MX, SPF, and DMARC records, along with an overall deliverability assessment.
Example use cases
Pre-send campaign email hygiene
“Before we send our newsletter, can you verify that subscriber@tempmail.io is deliverable and not a throwaway address — check its MX, SPF, and DMARC records and flag it if it's disposable?”
CRM lead quality gate
“We just got a new lead with the email noreply@bigcorp.com — can you check if it's a real deliverable address or a role account we shouldn't bother contacting, and whether the domain has proper MX and DMARC setup?”
User signup fraud detection
“A new user signed up with user123@guerrillamail.com — can you tell me if that's a burner or disposable email provider and whether the domain actually has MX records so we know if it's worth trusting?”
Technical details
Endpoint
GEThttps://cve-intel.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability check that goes beyond simple syntax validation — specifically when you need to detect disposable providers, verify live DNS MX/SPF/DMARC records, and identify role accounts in a single API call. Prefer it over basic regex validators when building lead qualification pipelines, signup fraud detection, or email campaign hygiene tools.
Side effects
- Missing or malformed email parameter returns a validation error
- Domain has no MX records — email considered undeliverable
- DNS lookup timeout if the domain's nameservers are slow or unresponsive
- Unknown or newly registered disposable providers may not be flagged
- Role account detection may produce false negatives for non-standard prefixes
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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