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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, 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://x402-audit.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured object indicating whether the email has valid syntax, whether the sending domain has live MX records enabling delivery, whether SPF and DMARC DNS records are present and configured, whether the provider is known as a disposable or burner email service, and whether the address appears to be a role account (e.g., info@, admin@).
Example use cases
Lead email quality gate
“Before we add this lead to our CRM, check if sales@acmecorp.io is a real deliverable address and whether the domain has proper MX and DMARC records — I don't want us chasing fake contacts.”
Signup form fraud prevention
“Someone just signed up with the email temp9823@guerrillamail.com — can you tell me if that's a disposable burner address so we can decide whether to block the registration?”
Email authentication compliance audit
“We're about to send a cold outreach campaign to contacts at fintech-startup.com — can you verify whether that domain has SPF and DMARC records so we know our emails won't bounce or get flagged as spam?”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability check that combines syntax validation, DNS MX record lookup, SPF/DMARC authentication record auditing, and disposable provider detection in a single call — particularly useful for lead enrichment pipelines, signup fraud prevention, or cold outreach preparation where email quality directly affects deliverability and domain reputation.
Side effects
- Email address missing or malformed input returns a 400-style error
- DNS lookup timeouts may cause MX/SPF/DMARC checks to fail or return incomplete results
- Private or internal domains may not resolve publicly, causing false negatives on MX records
- Rate limiting or payment failure via x402 may block the request
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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