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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 x402-audit.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/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://x402-audit.agentdiet.dev/v1/disposable-email)
Output
Returns a structured object indicating whether the email has valid syntax, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), and the live DNS status of MX, SPF, and DMARC records for the email's domain.
Example use cases
Screen signups for fake emails
“Before I add new user registrations to my CRM, can you check whether the email they gave — signup@guerrillamail.com — is a disposable or burner address with working MX records?”
Cold outreach deliverability check
“I'm about to send a campaign to contact@acmecorp.io — can you verify that email is deliverable and that the domain has proper SPF and DMARC DNS records so my messages won't get rejected?”
Detect role accounts in lead list
“Can you check whether sales@bigcompany.com is a role account like info@ or noreply@, and whether the domain actually has MX records configured so it can receive mail?”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email quality check combining syntax validation, disposable provider detection, role account flagging, and live DNS MX/SPF/DMARC verification in a single call — especially in B2B lead qualification, signup fraud prevention, or pre-send deliverability auditing workflows where a $0.005 per-call cost is acceptable.
Side effects
- Missing or malformed email parameter returns a validation error
- DNS lookup timeout if the domain's nameservers are slow or unreachable
- Unknown or very new domains may return incomplete DNS records
- Disposable provider list may not cover brand-new burner services
- Rate limiting or payment failure (HTTP 402) if USDC micropayment is not processed
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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