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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 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://serp-extract.agentdiet.dev/v1/email-verify)
Output
Returns a structured object indicating whether the email passed syntax validation, whether the domain has live MX records (confirming mail can be received), whether SPF and DMARC DNS records are configured, whether the provider is identified as a disposable/burner email service, and whether the address is a role account (e.g., info@, support@).
Example use cases
Lead quality check before CRM import
“Before I add these leads to our CRM, can you verify that contact@techstartup.io is a legitimate, deliverable email — make sure it has working MX records and isn't a throwaway or role address?”
Signup fraud detection for new users
“A new user just signed up with guerrillamail123@sharklasers.com — can you check whether that email is from a known disposable provider and if it actually has valid DNS mail records?”
Email infrastructure audit for outreach campaign
“We're about to send a cold outreach campaign to partnerships@bigcorp.com — can you confirm the email is syntactically valid, has MX records set up, and that the domain has SPF and DMARC configured?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/email-verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-signal email verification that goes beyond simple syntax checking — specifically when you need live DNS MX reachability, SPF/DMARC policy presence, disposable provider detection, and role account identification in a single API call. It is ideal for B2B lead enrichment pipelines, signup fraud prevention, and pre-campaign email hygiene checks where false positives from undeliverable addresses are costly.
Side effects
- Invalid or malformed email input — endpoint may return a syntax failure flag or error
- Domain has no MX records — reported as undeliverable even if syntax is correct
- DNS lookup timeout or transient DNS failure — may result in inconclusive MX/SPF/DMARC results
- Rate limiting or payment failure via x402 — request rejected with 402 status
- Unknown or very new domain with no DNS history — may return incomplete record checks
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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