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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 github-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 verification.
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://github-audit.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating email syntax validity, whether the provider is disposable or a known burner service, whether the address appears to be a role account (e.g. info@, admin@), and live DNS lookup results for MX records (mail servers), SPF policy, and DMARC policy for the domain — allowing the caller to assess full email deliverability and legitimacy.
Example use cases
Sign-up fraud prevention check
“Before I let this user register, can you verify that their email address user@tempmail.io isn't a disposable or burner address, and that it actually has working MX records so we know it can receive mail?”
Email campaign list hygiene
“I have a lead email address marketing@bigcorp.com — can you check if it's a real deliverable address, confirm the domain has MX records, and flag whether it's a role account so I know how to handle it in my outreach?”
Domain email infrastructure audit
“Can you look up the email configuration for the domain startup.io — specifically check if there are valid MX records, whether SPF and DMARC are properly set, and whether the domain is even capable of receiving email?”
Technical details
Endpoint
GEThttps://github-audit.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email validation covering syntax, DNS infrastructure (MX/SPF/DMARC), disposable provider detection, and role account flagging — especially in agentic or automated pipelines that require micropayment-native (x402) API access. Prefer this over basic regex-only validators when deliverability confidence and fraud prevention are important, or when you need live DNS verification rather than cached data.
Side effects
- Invalid or malformed email input returns a syntax error
- Domain with no DNS records returns MX lookup failure
- Temporary DNS resolution failures may return inconclusive deliverability status
- Payment failure (HTTP 402) if USDC micropayment is not provided
- Unknown or very new domains may have incomplete SPF/DMARC data
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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