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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 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://serp-extract.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating email syntax validity, whether the domain has live MX records (and which), presence and content of SPF and DMARC DNS records, whether the provider is flagged as disposable or burner, and whether the local part is a role account (e.g. info@, admin@, noreply@).
Example use cases
Pre-send lead list email scrubbing
“Before I import these leads into my CRM, can you check if sales@prospectcompany.io is actually deliverable — does the domain have MX records set up, and is it a throwaway or role address?”
Signup fraud prevention screening
“A new user just registered with user@mailinator.com — can you tell me if that's a disposable or burner email provider, whether the domain has real MX records, and if SPF and DMARC are configured?”
Email infrastructure audit for outbound
“We're about to launch a cold outreach campaign to partners@targetdomain.com — can you verify the email is syntactically valid, the domain has working MX records, and that SPF and DMARC records are properly set up to accept mail?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call, multi-signal email validation that combines syntax checking, real-time DNS MX/SPF/DMARC lookups, and disposable/role account detection — particularly in B2A or agent-driven workflows where HTTP 402 micropayment is acceptable. Prefer this over single-purpose SMTP ping tools when you need DNS record details alongside fraud signals.
Side effects
- Invalid or malformed email address causes validation failure with syntax error
- Domain has no MX records — email flagged as undeliverable
- DNS lookup timeout or failure returns an error or partial result
- Disposable provider lists may have false negatives for newly created burner domains
- Response schema is loosely typed — callers must handle unexpected or missing fields gracefully
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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