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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 mesh.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 to assess deliverability.
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://mesh.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating whether the email address passes syntax validation, whether the domain is a known disposable/burner provider, whether it is a role account (e.g. admin@, noreply@), and the live DNS status of MX, SPF, and DMARC records for the email's domain, giving an overall deliverability assessment.
Example use cases
Pre-send lead list email validation
“Before I start my outreach campaign, can you verify that contact@acmecorp.com is actually deliverable — check whether it's a real address, not a burner, and that the domain has proper MX and SPF records set up?”
Signup fraud detection for new users
“A new user just signed up with the email temp123@mailnull.com — can you check whether this is a disposable or throwaway email address and whether the domain has valid mail exchange records?”
Email infrastructure audit for a domain
“I need to know if our client's email domain is properly configured for deliverability — can you validate support@clientbiz.io and tell me if it has MX, SPF, and DMARC records in DNS?”
Technical details
Endpoint
GEThttps://mesh.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live DNS-backed email validation that goes beyond simple syntax checks — specifically when you need to detect disposable/burner providers, role accounts, and verify actual MX/SPF/DMARC configuration in real time. Prefer it over static regex validators or basic format checkers when deliverability accuracy and fraud prevention are critical, such as before email outreach campaigns, user signup flows, or B2B lead enrichment pipelines.
Side effects
- Invalid or malformed email string provided — returns syntax error or validation failure
- Domain has no MX records — flagged as undeliverable
- DNS lookup timeout or network error during live record check
- Disposable provider database may not include newly created throwaway domains
- Edge-case international or IDN email formats may produce unexpected results
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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