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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-compiler.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 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-compiler.agentdiet.dev/v1/email)
Output
Returns a structured object indicating email syntax validity, whether the domain has live MX records (deliverability), SPF record presence and content, DMARC record presence and policy, whether the provider is a known disposable/burner service, and whether the address is a role account (e.g. info@, admin@, noreply@).
Example use cases
Pre-send email list scrubbing
“Before I send this outreach campaign, check if sarah.jones@tempmail.io is a valid, deliverable address — flag it if it's a burner or disposable provider so I don't waste a send on it.”
Lead form submission validation
“A new user just signed up with the email noreply@bigcorp.com — can you verify whether that's a real deliverable address or a role account I should reject?”
B2B prospect email verification
“I have a prospect's email cto@startupxyz.io — can you verify it's syntactically correct, that the domain has live MX records, and whether SPF and DMARC are set up properly?”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email health check combining syntax validation, DNS MX/SPF/DMARC lookups, disposable provider detection, and role account flagging in a single call — particularly useful for lead enrichment pipelines, signup form validation, and pre-campaign list scrubbing where bounce prevention and data quality matter.
Side effects
- Invalid or missing email parameter returns a validation error
- Domain with no MX records returns non-deliverable status
- DNS lookup timeout for slow or unresponsive nameservers
- Payment required (HTTP 402) if x402 USDC payment header is missing or insufficient
- Malformed email string may return syntax error rather than DNS lookup
- Rate limiting or quota exhaustion if many calls are made rapidly
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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