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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 workflows.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/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://workflows.agentdiet.dev/v1/disposable-email)
Output
Returns a structured JSON object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address appears to be a role account (e.g. info@, admin@), and live DNS lookup results for MX, SPF, and DMARC records on the domain.
Example use cases
Screening signups for fake emails
“Before I let this user register with the email signup123@guerrillamail.com, can you check if it's a disposable or burner address, whether it has working MX records, and if the domain passes SPF and DMARC checks?”
B2B outreach list hygiene
“I have a lead email contact@acmecorp.io — can you verify it's syntactically valid, not a role account, and that the domain has proper MX, SPF, and DMARC records so I know it's worth including in my outreach campaign?”
Detecting fraudulent account creation
“We're seeing suspicious signups — can you check if support@yopmail.com is from a known throwaway email service and whether its DNS is configured for real mail delivery?”
Technical details
Endpoint
GEThttps://workflows.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email health check that combines syntax validation, disposable-provider detection, role-account identification, and live DNS MX/SPF/DMARC record verification — especially useful before user onboarding, email outreach campaigns, or fraud screening workflows. It is more thorough than simple regex or format-only validators.
Side effects
- Missing or empty email parameter returns a 400 validation error
- Malformed email string may return syntax-invalid flag without DNS checks
- DNS lookup timeouts may cause MX/SPF/DMARC fields to return as unresolved or null
- Payment not completed (402) if x402 micropayment is not attached
- Rare disposable providers not in the blocklist may pass as legitimate
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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