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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 hn-pulse.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 presence.
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://hn-pulse.agentdiet.dev/v1/mx-check)
Output
Returns a structured object containing email syntax validity, whether the domain uses a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX, SPF, and DMARC records — giving a clear picture of whether the email is safe and deliverable.
Example use cases
Lead list email screening
“Before I import this list of sales leads into my CRM, can you check whether contact@startupxyz.io is a valid, deliverable email and not a burner or generic role address?”
Sign-up fraud prevention check
“A user just registered with the email temp-user123@mailinator.com — can you verify if it's a real deliverable address or a disposable throwaway provider I should block?”
Email campaign pre-send audit
“I'm about to send a marketing email to newsletter@bigclient.com — can you check if that domain has proper MX, SPF, and DMARC records so I know it won't bounce or land in spam?”
Technical details
Endpoint
GEThttps://hn-pulse.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a real-time, multi-signal email check that goes beyond simple syntax validation — specifically when you need live DNS MX/SPF/DMARC record verification combined with disposable provider detection and role-account flagging in a single call. Ideal for lead enrichment pipelines, signup fraud prevention, and pre-send email campaign audits where deliverability confidence is critical.
Side effects
- Missing or malformed email parameter returns a validation error
- Domains with no DNS records will return MX/SPF/DMARC as absent or unresolvable
- Temporary DNS lookup failures may return inconclusive results
- Very new domains may not yet have propagated DNS records
- Rate limiting or payment failure (HTTP 402) if USDC micropayment is not settled
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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