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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 2026-10-21).
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)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain has live MX records (confirming deliverability), SPF and DMARC DNS record presence and content, whether the provider is a known disposable/burner service, and whether the local part is a role address (e.g. info@, admin@, noreply@).
Example use cases
Screening signups for fake emails
“Before we send the welcome email, can you check whether newuser@mailinator.com is a legit address or a throwaway — verify its syntax, MX records, and whether it's a disposable provider?”
Validating leads before outreach
“I have a sales lead with the email contact@prospectcorp.io — can you verify it's deliverable, check if the domain has proper MX and SPF records, and tell me if it's a role account?”
Auditing email domain DNS health
“Can you run a full deliverability check on support@mybrand.com — I need to know if the MX, SPF, and DMARC records are all properly configured for that domain?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call, real-time email hygiene check that combines syntax validation, live DNS MX lookup, SPF/DMARC policy verification, disposable provider detection, and role-account flagging — especially in agentic or automated workflows that require HTTP 402 micropayment support. Prefer it over basic syntax-only validators when actual deliverability and anti-fraud signals matter.
Side effects
- Invalid or missing email parameter returns a validation error
- DNS timeout or unreachable nameservers may cause MX/SPF/DMARC lookups to fail or return incomplete data
- Newly registered domains may not yet have propagated DNS records, yielding false negatives
- Highly obscure disposable providers not in the blocklist may be missed
- Payment failure (HTTP 402) if x402 USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emailrequired | string | Email address to validate for syntax, MX deliverability, and disposable risk |
| limit | integer | Maximum number of items to return per page (1-100) |
| cursor | string | Opaque pagination cursor for fetching the next page |
Output
Schema · Response
{
"type": "object"
}Reviews
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