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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 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://shopify-spy.agentdiet.dev/v1/email)
Output
Returns a structured JSON object indicating whether the email address passes syntax validation, whether the domain belongs to a known disposable or burner provider, whether the address appears to be a role account (e.g. info@, admin@), and the live DNS lookup results for MX, SPF, and DMARC records including their presence and configuration status.
Example use cases
Screening sign-up form submissions
“A new user just registered with the email free.user99@guerrillamail.com — can you verify if it's a legitimate email or a throwaway burner address, and check if the domain has proper mail records?”
Pre-send lead list hygiene
“Before I import this lead into my CRM, can you check if contact@bigcorpinquiries.io is deliverable — specifically confirm it has working MX records and isn't a role-based or disposable address?”
Fraud detection for checkout
“A customer just placed a high-value order using noreply@mailinator.com — can you quickly validate that email for syntax, check if it's a disposable provider, and tell me if the domain has DMARC set up?”
Technical details
Endpoint
GEThttps://shopify-spy.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, disposable/burner domain detection, role account flagging, and live DNS verification of MX, SPF, and DMARC records — especially in B2A or agent-automated workflows where paying per-call via HTTP 402 (x402/USDC) is acceptable. Prefer it over basic syntax-only validators when deliverability and fraud prevention are the goal, and over domain-only WHOIS tools when you need email-specific DNS records (MX, SPF, DMARC) verified in real time.
Side effects
- Missing or empty email parameter returns a 400 validation error
- Malformed email string (no @ sign) may return syntax-invalid flag rather than DNS results
- DNS lookup timeout for obscure or offline domains may result in incomplete MX/SPF/DMARC data
- Payment failure via x402 returns 402 with payment details required
- Temporary DNS resolver outages may cause intermittent failures on record lookups
- Very new domains may not yet have propagated DNS records, causing false negatives
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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