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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 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 detection, role account flagging, 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://agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured report on the email address covering: syntax validity, whether the domain uses a known disposable/burner provider, whether it is a role account (e.g. admin@, info@), live MX record presence and values, SPF record existence and policy, and DMARC record existence and enforcement policy.
Example use cases
User signup email screening
“Before I accept this registration, can you verify that user@tempmail.io is a legitimate email — check if it's a disposable/burner address, whether the domain has real MX records, and if SPF and DMARC are set up?”
B2B lead list hygiene audit
“I have a lead email address contact@acmecorp.com — can you check if it's a role account, whether the domain is properly configured with MX, SPF, and DMARC records, and if it's actually deliverable?”
Domain email security posture check
“Can you audit the email security setup for the domain behind newsletter@bigbrand.com? I want to know if their SPF and DMARC records are in place and whether the address can actually receive mail.”
Technical details
Endpoint
GEThttps://agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability and security check combining syntax validation, disposable provider detection, role account identification, and live DNS MX/SPF/DMARC lookups in a single call. Prefer it over basic syntax checkers when DNS-level deliverability and email authentication policy (SPF/DMARC) matter — e.g. before sending transactional email, onboarding users, or auditing B2B contact lists.
Side effects
- Invalid or malformed email address provided — returns syntax error
- Domain has no DNS records (non-existent domain) — MX/SPF/DMARC checks fail with lookup error
- DNS timeout during live record resolution — partial results returned
- Empty email parameter — returns validation error for missing required field
- Payment failure via x402 — request blocked before processing
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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