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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 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/spf-dmarc-auditor)
Output
Returns a structured object indicating whether the email passes syntax checks, whether the domain belongs to a known disposable/burner provider, whether the local part is a role account (e.g. info@, support@), and the live DNS status of MX records (mail server reachability), SPF records (sender policy), and DMARC records (domain-based message authentication policy).
Example use cases
Lead list email hygiene
“Before we upload this lead list to our CRM, check if sarah.johnson@prospectco.io is a valid deliverable email, not a burner or throwaway address, and that the domain actually has MX records set up.”
Signup fraud prevention
“A user just signed up with the email temp9283@mailinator.com — can you verify whether it's a disposable or burner provider so we can decide whether to block the registration?”
Cold outreach domain audit
“I'm about to send a cold outreach campaign to contacts at bigclient.com — can you verify that their domain has valid MX, SPF, and DMARC records so my emails won't bounce or get flagged as spam?”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a real-time, multi-signal email validity check that goes beyond simple regex — especially when you want to simultaneously confirm DNS deliverability (MX), sender authentication setup (SPF/DMARC), and filter out disposable or role-based addresses in a single call. Ideal for lead enrichment pipelines, signup validation, and cold outreach pre-screening.
Side effects
- Invalid or malformed email string returns a syntax error flag
- Domain with no MX records returns undeliverable status
- DNS lookup timeout for obscure or newly registered domains may return inconclusive results
- Disposable provider lists may not cover every burner service
- Payment failure (HTTP 402) if USDC micropayment is not processed correctly
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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