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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 2026-10-23).
Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record health.
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 provider is a known disposable/burner service, whether the address is a role account (e.g. info@, noreply@), and live DNS lookup results for MX records (mail server reachability), SPF records, and DMARC policy — giving an overall deliverability assessment for the address.
Example use cases
Pre-send outreach email screening
“Before I send my sales campaign, check whether contact@acmecorp.io is a legitimate deliverable email — verify its MX records exist, that it's not a disposable address, and that the domain has SPF and DMARC set up properly.”
Signup fraud prevention filter
“A user just registered with the email throwaway123@mailinator.com — can you validate it for me and tell me if it's a disposable or burner address so I can decide whether to block the signup?”
B2B lead list email audit
“I have a lead I want to reach out to: operations@bigclient.com — can you do a full email deliverability check including MX, SPF, DMARC, and whether it looks like a role account or fake address?”
Technical details
Endpoint
POSThttps://whale-momentum.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability check that combines syntax validation, disposable/burner detection, role account identification, and live DNS MX/SPF/DMARC record verification in a single call — especially in B2B lead enrichment, signup fraud prevention, or pre-campaign email list hygiene workflows where HTTP 402 micropayment and MCP compatibility are required.
Side effects
- Malformed or missing email input returns a validation error
- Domains with no DNS records may return MX-not-found or unresolvable status
- Temporary DNS timeouts may cause incomplete record lookups
- Very new domains may not yet have propagated MX/SPF/DMARC records, causing false negatives
- Disposable provider lists may lag behind newly created burner services
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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