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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 mcp-security.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown.
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://mcp-security.agentdiet.dev/v1/email-check)
Output
Returns a structured object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX, SPF, and DMARC records on the email's domain, giving a comprehensive deliverability and risk assessment.
Example use cases
User signup email verification
“Before we create an account for this new user, can you verify that signup@tempmail.io is a legitimate email — not a disposable or burner address — and that it has valid MX records so we can actually reach them?”
B2B lead list email hygiene
“I have a lead I'm about to reach out to: contact@prospectcorp.com — can you check if it's a real deliverable address, whether it's a role account, and if the domain has SPF and DMARC configured properly?”
Email security posture audit
“Can you check the email security setup for the domain behind alerts@mybusiness.io — specifically whether it has proper MX, SPF, and DMARC DNS records in place?”
Technical details
Endpoint
POSThttps://mcp-security.agentdiet.dev/v1/email-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-signal email validation that combines syntax checking, disposable provider detection, role account identification, and live DNS MX/SPF/DMARC record verification in a single call. It is especially valuable for agent workflows that need to gate signups, qualify B2B leads, or audit email infrastructure security without calling multiple separate DNS or email hygiene APIs.
Side effects
- Invalid or malformed email input returns a syntax error
- DNS lookup timeouts for domains with unreachable nameservers
- Disposable provider list may not cover newly created burner services
- Missing or empty email field returns a 400-level validation error
- Transient DNS failures may cause intermittent MX/SPF/DMARC lookup failures
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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