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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 status, role account detection, and live DNS MX, SPF, and DMARC record health.
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/spf-dmarc-auditor)
Output
Returns a structured object covering: email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. admin@, info@), live DNS MX record lookup results, SPF record presence and configuration, and DMARC record presence and policy — giving a comprehensive deliverability and security posture for the submitted email address.
Example use cases
Pre-send campaign email validation
“Before I send my marketing email blast, check if sarah.johnson@startup.io is a real deliverable address and not a burner or role account — I need to know if the MX, SPF, and DMARC records are all healthy.”
Lead form signup fraud detection
“A new user just signed up with the email temp1234@mailinator.com — can you verify if this is a disposable or throwaway email address so I can decide whether to block the signup?”
B2B outreach email hygiene
“I'm about to cold-email sales@bigcorp.com — can you check if that domain's MX records are live, if SPF and DMARC are properly configured, and whether it's a role-based address I should avoid?”
Technical details
Endpoint
GEThttps://cve-intel.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, disposable provider detection, role account flagging, and live DNS MX/SPF/DMARC record verification. It is ideal for pre-send email list hygiene, B2B lead validation, user registration fraud prevention, and security audits of email infrastructure — especially when you need all these signals in one call rather than stitching together separate DNS and blocklist tools.
Side effects
- Missing required 'email' parameter returns a 400 error
- Malformed email string may return a syntax-invalid flag rather than performing DNS lookups
- DNS lookup timeouts for obscure or offline domains may return partial results
- Payment not completed (HTTP 402) if x402 payment header is absent or rejected
- Domains with no MX records return deliverability failure but not necessarily an error code
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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