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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 llms-generator.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 existence.
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://llms-generator.agentdiet.dev/v1/mx-check)
Output
Returns a structured object indicating whether the email address is syntactically valid, whether the domain is a known disposable or burner provider, whether the address is a role account (e.g. info@, support@), and the live DNS status of MX, SPF, and DMARC records for the domain.
Example use cases
Fraud screening on user signup
“Before we create an account for the user who just signed up with temp-mail99@guerrillamail.com, can you check if that email is a disposable or burner address and whether it has real MX records?”
B2B lead list hygiene
“I have a lead email address sales@acmecorp.io — can you verify it's syntactically valid, not a role account, and that the domain actually has MX, SPF, and DMARC records set up before we add it to our outreach campaign?”
Pre-send deliverability audit
“We're about to email newsletter@bigclient.org — can you run a full deliverability check on that address, including live DNS MX lookups and SPF/DMARC record verification, so we know it won't bounce?”
Technical details
Endpoint
GEThttps://llms-generator.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email verification that combines syntax checking, live DNS MX/SPF/DMARC record lookups, and disposable/role account detection in a single call — especially useful for agent workflows doing fraud prevention, lead enrichment, or pre-send deliverability audits. Prefer it over static list-based validators when live DNS truth is required.
Side effects
- Email address missing or malformed input returns a validation error
- DNS lookup timeout if the domain's nameservers are slow or unresponsive
- Unknown or newly registered domains may return incomplete DNS results
- Disposable provider lists may not cover every ephemeral mail service
- Payment required (HTTP 402) if the x402 micropayment is not completed
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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