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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 shopify-spy.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 verification.
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://shopify-spy.agentdiet.dev/v1/mx-check)
Output
Returns a structured object indicating whether the email address is syntactically valid, whether it belongs to a known disposable or burner email provider, whether it is a role account (e.g. info@, admin@), and the live DNS status of the domain's MX, SPF, and DMARC records — providing a comprehensive deliverability and trust assessment.
Example use cases
Screening signups for throwaway emails
“Before I add this new user to our system, check if the email they signed up with — tempuser123@mailinator.com — is a disposable or burner address and whether it can actually receive mail.”
Outreach list email hygiene
“I have a cold outreach target: ceo@startupxyz.io — can you verify that email is syntactically valid, not a role account, and that the domain has working MX records before I send anything?”
Email authentication audit for a domain
“I'm about to email a prospect at sales@bigclient.com — can you tell me whether that domain has SPF and DMARC records set up and whether the mailbox is likely to receive messages?”
Technical details
Endpoint
GEThttps://shopify-spy.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC verification. It is especially useful for B2B lead qualification, signup form validation, and outreach list hygiene where you need more than just a regex check. Prefer it over generic SMTP-ping tools when email authentication record auditing (SPF/DMARC) is also required.
Side effects
- Invalid or malformed email string returns a syntax error or validation failure
- Domain with no MX records returns undeliverable status
- DNS lookup timeout for slow or unreachable nameservers
- Disposable provider database may not cover every new burner service
- Role account detection may produce false positives for uncommon prefixes
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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