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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 alpha-stream.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 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://alpha-stream.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured object indicating email syntax validity, whether the domain belongs to a known disposable/burner provider, whether it is a role account (e.g. admin@, info@), live DNS MX record presence and values, SPF record existence and content, and DMARC policy status — giving a complete deliverability and security posture assessment for the address.
Example use cases
Lead list email hygiene check
“Before we import this lead into our CRM, can you verify that sales@acmecorp.com is a legitimate, deliverable email and not a burner address — and confirm the domain has proper MX and DMARC records set up?”
Signup fraud detection
“A new user just registered with temp-mail123@guerrillamail.com — can you check if that's a disposable or throwaway email address so I know whether to flag the account?”
Email security posture audit
“We're about to send a cold outreach campaign to marketing@bigclient.io — can you first validate that email, check whether the domain has SPF and DMARC configured, and tell me if there are any deliverability red flags?”
Technical details
Endpoint
POSThttps://alpha-stream.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability and DNS security check in a single call — covering syntax, disposable detection, role account flags, and live MX/SPF/DMARC lookups. Prefer it over simple regex validators when you need live DNS validation, or over domain-only tools when you need per-address disposable and role account intelligence. Well-suited for agent workflows handling lead enrichment, signup validation, or outreach campaign preparation.
Side effects
- Malformed or empty email input returns a validation error
- DNS lookup timeout for domains with non-responsive nameservers
- Unknown or newly registered domains may have incomplete MX/SPF/DMARC records returned
- Payment failure via x402 if USDC balance is insufficient
- Rate limiting if too many requests are sent without idempotency keys
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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