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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 email-verify.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/DMARC record checks to assess deliverability.
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://email-verify.agentdiet.dev/v1/disposable-email)
Output
Returns a structured object indicating whether the email address is syntactically valid, whether the provider is a known disposable/burner service, whether it is a role-based account (e.g. admin@, noreply@), and the live DNS state of MX, SPF, and DMARC records for the email's domain, collectively forming a deliverability risk assessment.
Example use cases
Screening signups for fake emails
“Before activating this new user account, can you verify that signup@tempmail99.com isn't a disposable or burner email, and confirm the domain actually has MX records set up so it can receive mail?”
Validating a B2B lead list
“I have a lead email address — ceo@bigenterprise.com — can you check if it's syntactically valid, not a role account, and whether the domain's DNS has proper MX and SPF records before I add it to our outreach campaign?”
Auditing domain email infrastructure
“Can you inspect the email security posture of the domain used in support@cloudvendor.io — specifically whether it has DMARC and SPF records configured, and whether MX records are live?”
Technical details
Endpoint
GEThttps://email-verify.agentdiet.dev/v1/disposable-email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email validation that goes beyond simple syntax checks — specifically when you need to detect disposable/burner providers, role accounts, and verify that the email's domain has functioning MX infrastructure and properly configured SPF/DMARC records. Prefer it over static regex validation when email deliverability and fraud prevention are business-critical, such as during user onboarding, lead qualification, or pre-send campaign hygiene.
Side effects
- Missing or malformed email parameter returns a validation error
- DNS lookup timeouts for obscure or slow-responding domains may yield incomplete MX/SPF/DMARC results
- Newly created or very niche disposable providers may not be flagged if not yet in the blocklist
- Role account detection relies on well-known prefixes and may miss custom role names
- Payment failure via x402 returns HTTP 402 and blocks the request
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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