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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 sec-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 detection, role account identification, and live DNS MX/SPF/DMARC record checks to assess deliverability.
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://sec-intel.agentdiet.dev/v1/email)
Output
Returns a structured assessment of the email address including: syntax validity, whether the domain belongs to a known disposable/burner provider, whether it is a role-based account (e.g. info@, noreply@), live DNS MX record presence and values, SPF record existence and policy, and DMARC record existence and policy — collectively indicating whether the email is likely deliverable and trustworthy.
Example use cases
User signup email validation
“Before we let this user register, can you verify that signup@tempmail.io is a legitimate email — check if it's a disposable or burner address, and confirm the domain actually has mail servers set up?”
B2B lead list email hygiene
“I have a sales lead whose email is listed as sales@acme-corp.com — can you check whether that's a real deliverable address, whether it's a role account, and whether the domain has proper SPF and DMARC records?”
Email security posture check
“Can you check the email domain for ceo@bigbank.com and tell me if they have SPF, DMARC, and working MX records configured — I want to know if their email infrastructure is properly secured?”
Technical details
Endpoint
GEThttps://sec-intel.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email validation that goes beyond syntax checking — specifically when you need real-time DNS MX/SPF/DMARC lookups combined with disposable provider and role account detection in a single call. Prefer this over simple regex validators when onboarding users, scrubbing lead lists, or assessing email security posture. It is especially useful for agents that need to make automated trust decisions about email addresses without a separate DNS lookup service.
Side effects
- Missing or malformed email parameter returns a 400 error
- DNS lookup timeout for domains with slow or unreachable nameservers
- False negatives on newly registered disposable providers not yet in blocklists
- Role account detection may miss unusual role prefixes
- Payment failure via x402 if USDC balance is insufficient
- Domains with intentionally missing DNS records may be flagged as undeliverable even if valid
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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