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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 serp-extract.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 lookup.
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://serp-extract.agentdiet.dev/v1/email)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain has live MX records (deliverability), whether SPF and DMARC DNS records are configured, whether the provider is a known disposable/burner service, and whether the address is a role account (e.g. info@, noreply@).
Example use cases
Signup fraud screening for SaaS
“Before I activate this new account, check if the email 'free2024@mailinator.com' is a disposable burner address and whether it has valid MX records — I don't want to let throwaway emails into my platform.”
CRM lead quality check
“I just imported a batch of leads and I need to verify one of them — can you run 'sales@acmecorp.io' through full email validation including SPF and DMARC checks so I know if it's safe to reach out?”
Cold outreach deliverability audit
“Before I add 'cto@startupxyz.com' to my outreach list, check if that domain has proper MX, SPF, and DMARC records set up, and tell me if it's a role account that might ignore cold emails.”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single API call that combines email syntax checking, live DNS MX/SPF/DMARC resolution, and disposable/role-account detection together — especially in agentic workflows where reducing bounce rates, screening signups, or qualifying leads is the goal. Prefer it over standalone syntax validators when live DNS reachability is critical, and over raw DNS tools when you also need disposable-provider intelligence.
Side effects
- Email address missing or malformed input returns a validation error
- Domain with no MX records flagged as undeliverable
- DNS lookup timeout for slow or unreachable nameservers
- Payment required (HTTP 402) if x402 USDC micropayment not provided
- Rate limiting if too many requests sent in rapid succession
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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