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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 serp-extract.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 provider status, role account detection, 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://serp-extract.agentdiet.dev/v1/email-validator)
Output
Returns a structured object indicating email syntax validity, whether the address belongs to a known disposable or burner provider, whether it is a role account (e.g. admin@, noreply@), and the live DNS lookup results for MX, SPF, and DMARC records — giving a comprehensive deliverability and risk profile for the submitted email address.
Example use cases
Pre-send email list scrubbing
“Before I import these leads into my CRM, check whether contact@acmecorp.io is a valid, non-disposable email with working MX records and proper SPF and DMARC setup so I know it won't bounce.”
Signup form fraud prevention
“A user just signed up with throwaway123@mailinator.com — can you verify whether that's a disposable or burner email address so I can decide whether to block the registration?”
B2B outreach domain health check
“I'm about to send a cold outreach to sales@bigcompany.com — can you confirm the email syntax is valid, the domain has live MX records, and that SPF and DMARC are properly configured so my message has the best chance of landing in their inbox?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/email-validator?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email verification covering syntax, live DNS MX/SPF/DMARC records, disposable provider detection, and role account flagging — particularly in B2B lead enrichment, signup fraud prevention, or pre-send deliverability pipelines. Prefer it over generic syntax-only validators when live DNS verification and disposable/burner detection are required.
Side effects
- Missing or malformed email address field returns a validation error
- DNS timeout or unreachable nameservers may result in incomplete MX/SPF/DMARC data
- Very new or obscure domains may not have SPF/DMARC records configured, resulting in those fields being absent or null
- Payment failure via x402 returns HTTP 402 and the call is not processed
- Idempotency-Key collisions across retries may return cached prior results
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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