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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 cve-intel.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 flags, and live DNS MX, SPF, and DMARC record presence.
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://cve-intel.agentdiet.dev/v1/email-validator)
Output
Returns a structured object indicating: whether the email passes syntax checks, whether the domain belongs to a known disposable/burner provider, whether the address is a role account (e.g. info@, noreply@), and the live DNS status of MX records (can the domain receive mail), SPF records (sender policy), and DMARC records (anti-spoofing policy).
Example use cases
CRM lead email hygiene check
“Before we import this list of leads, can you verify that jane.smith@prospectcorp.com is a real, deliverable email — not a burner or role account — and that its domain has MX, SPF, and DMARC records in place?”
Sign-up fraud prevention
“A new user just registered with the email temp12345@mailnesia.com — can you check if it's a disposable or throwaway address so we can decide whether to block the account?”
Email security compliance audit
“We're auditing our vendor contact list. Can you validate contact@vendordomain.biz to confirm the domain has proper MX, SPF, and DMARC DNS records configured, and flag if it's a role-based address?”
Technical details
Endpoint
GEThttps://cve-intel.agentdiet.dev/v1/email-validator?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email validity check that combines syntax, disposability, role-account detection, and live DNS deliverability (MX/SPF/DMARC) in a single call. Prefer it over simple regex validators when you need to know if the domain can actually receive mail, or over basic MX checkers when you also need to catch burner and role accounts. Especially useful in agent workflows that gate user registration, CRM imports, or outreach lists on email quality.
Side effects
- Missing or malformed email parameter returns a 400 validation error
- Domain with no DNS presence returns MX lookup failure but email still passes syntax check
- Temporary DNS resolution failures may cause false negatives on MX/SPF/DMARC lookups
- Payment required (HTTP 402) if x402 USDC payment header is missing or insufficient
- Disposable provider database may not cover very newly created burner domains
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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