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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 email-verify.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-23).
Validates an email address for syntax correctness, disposable/burner domain detection, role account status, and live DNS MX, SPF, and DMARC record existence.
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://email-verify.agentdiet.dev/v1)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain uses a known disposable/burner provider, whether the address is a role account, and the live DNS lookup results for MX, SPF, and DMARC records — giving a clear picture of whether the email is likely deliverable.
Example use cases
Signup fraud screening for SaaS
“Before I activate this new user account, check whether the email they signed up with — freestuff2024@mailinator.com — is a disposable burner address or a legit deliverable inbox.”
B2B outreach list hygiene
“I have a lead I'm about to email — can you verify that sarah.jones@techventures.io is a real address with working MX records and that the domain has SPF and DMARC set up before I send my pitch?”
Email domain health audit
“We're having deliverability issues — can you check noreply@ourcompany.io and tell me whether it's a role account, whether the MX records are live, and whether SPF and DMARC are properly configured?”
Technical details
Endpoint
POSThttps://email-verify.agentdiet.dev/v1?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single, comprehensive email check that combines syntax validation, disposable/burner detection, role-address flagging, and live DNS verification of MX, SPF, and DMARC in one call. It is especially suited for AI agent workflows requiring lightweight per-email checks at $0.005/call via HTTP 402 micropayments, and when you need IETF MCP-compatible tooling without building DNS lookup infrastructure yourself.
Side effects
- Malformed or missing email input returns a validation error
- DNS lookup timeouts may result in inconclusive MX/SPF/DMARC results
- Newly registered domains may not yet have propagated DNS records
- Private or internal mail servers may not expose public MX records
- Disposable provider database may not cover every obscure burner domain
- Payment failure (HTTP 402) if x402 micropayment is not properly attached
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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