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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 onchain-risk.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://onchain-risk.agentdiet.dev/v1/email)
Output
Returns a structured object indicating email syntax validity, whether the address belongs to a known disposable or burner email provider, whether it is a role account (e.g. info@, admin@, noreply@), and live DNS lookup results for MX, SPF, and DMARC records — giving a comprehensive deliverability and trustworthiness assessment.
Example use cases
Signup fraud prevention screening
“Before I create an account for this new user, can you check whether their email address support@guerrillamail.com is from a disposable provider, a role account, or missing proper DNS records? I want to block fake signups.”
Pre-send email list hygiene
“I'm about to send a marketing campaign and need to validate this lead's email: ceo@acmecorp.io — can you confirm it has working MX records, passes SPF and DMARC checks, and isn't a role or throwaway address?”
B2B lead quality assessment
“I just scraped a contact email from a company website: info@startupxyz.com — can you tell me if it's actually deliverable, whether it's a generic role account, and if the domain has email authentication set up properly?”
Technical details
Endpoint
POSThttps://onchain-risk.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a multi-dimensional email validation that goes beyond simple syntax checking — specifically when you need to combine disposable provider detection, role account identification, and live DNS MX/SPF/DMARC verification in a single call. It is ideal for fraud prevention workflows, lead quality scoring, and pre-send list hygiene where false signups or undeliverable addresses carry business risk.
Side effects
- Malformed or missing email field returns a validation error
- DNS lookup timeout for domains with slow or unresponsive nameservers
- False negatives on very new disposable providers not yet in the known list
- Role account detection may miss custom or unconventional role-like addresses
- DMARC/SPF parsing may fail on complex or malformed DNS record formats
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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