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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 whale-momentum.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://whale-momentum.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating email syntax validity, whether the domain uses a known disposable/burner provider, whether the address is a role account (e.g. admin@, info@), and live DNS lookup results for MX, SPF, and DMARC records — providing a comprehensive deliverability and authentication assessment.
Example use cases
Lead quality gate before CRM entry
“Before I add this new lead to our CRM, can you verify that sarah.johnson@startupxyz.com is a real deliverable email — check if it's disposable, a role account, and whether the domain has proper MX, SPF, and DMARC records set up?”
Fraud detection for user signup
“A user just signed up with the email temp123@guerrillamail.com — can you check if this is a burner or disposable email address, and whether it would actually be deliverable?”
Email campaign list hygiene
“I want to send a newsletter to contact@bigclient.org — can you verify the email syntax is valid, confirm the domain has MX records pointing somewhere real, and check whether SPF and DMARC are configured so replies won't bounce?”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, all-in-one email validation that goes beyond simple syntax checking to include live DNS MX/SPF/DMARC lookups, disposable provider detection, and role account identification in a single call — ideal for lead enrichment pipelines, signup fraud prevention, and pre-campaign email list hygiene.
Side effects
- Missing or empty email parameter returns a validation error
- Malformed email string may return syntax-invalid status rather than an error
- DNS lookup timeouts for domains with slow or unreachable nameservers
- Non-existent domains return no MX/SPF/DMARC records found
- Payment required (HTTP 402) if x402 USDC micropayment is not attached
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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