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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 whale-momentum.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 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://whale-momentum.agentdiet.dev/v1/email)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the provider is a known disposable or burner service, whether the address is a role account (e.g. info@, support@), and the live DNS check results for MX records (mail server existence), SPF record presence, and DMARC policy record — collectively indicating whether the email is likely deliverable and trustworthy.
Example use cases
Sign-up fraud screening
“Before creating an account for this new user, can you verify that their email sarah.temp@mailinator.com is legitimate and not from a throwaway provider, and that the domain actually has working mail servers?”
Sales lead email quality check
“I have a lead with the email contact@acmecorp.io — can you confirm it's syntactically valid, deliverable, and that the domain has MX, SPF, and DMARC records set up properly before we reach out?”
Mailing list hygiene audit
“Check whether newsletter@noreply.bigbrand.com is a role account or catch-all that might hurt our deliverability, and confirm the domain's DNS mail configuration looks healthy.”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email quality check that goes beyond simple regex validation — especially when you need live DNS MX, SPF, and DMARC verification alongside disposable provider and role account detection in a single call. It is well-suited for fraud prevention at sign-up, pre-send deliverability screening, or lead enrichment workflows where email hygiene is critical.
Side effects
- Missing or empty email parameter returns a validation error
- Malformed email string that cannot be parsed returns a syntax-invalid response
- DNS lookup timeout for the email domain may result in an inconclusive MX/SPF/DMARC result
- Non-existent domain returns no MX records found
- Payment not completed via x402 returns HTTP 402 Payment Required
- Rate limiting may occur on high request volumes
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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