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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, and DMARC record lookup.
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/mx-deliverability-verifier)
Output
Returns a structured object indicating: whether the email syntax is valid, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX records, SPF TXT record, and DMARC policy record — giving an overall deliverability assessment.
Example use cases
Signup form disposable email screening
“Before I create an account for this user, check if the email they provided — tempuser99@mailinator.com — is a disposable or burner address and whether the domain actually has working mail servers.”
Pre-send campaign email validation
“I'm about to send a marketing email to leads@prospects.io — can you verify the email syntax is correct and that the domain has proper MX records, SPF, and DMARC configured so my message won't bounce?”
CRM data quality audit
“I want to make sure support@acmecorp.com is a real deliverable address before adding it to our CRM — check if it's a role account, whether the domain's MX records are live, and if SPF and DMARC are set up properly.”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a combined, single-call check covering email syntax, disposable provider detection, role account flagging, AND live DNS MX/SPF/DMARC verification in one response. It is ideal for agent workflows that need to gate on email quality before outreach, signup, or CRM ingestion, especially when a comprehensive DNS-layer check (not just syntax) is required.
Side effects
- Missing or malformed email parameter returns a validation error
- Non-existent domain results in MX lookup failure with appropriate flag
- DNS timeout causes incomplete record results for SPF or DMARC
- Newly registered domains may lack SPF/DMARC records, flagged as missing
- Rate limiting or payment failure (402) if credit is insufficient
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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