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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 company-enrich.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, and DMARC record presence.
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://company-enrich.agentdiet.dev/v1/mx-check)
Output
Returns a structured response indicating whether the email address is syntactically valid, whether the domain has live MX records (confirming mail can be received), whether SPF and DMARC DNS records are present, whether the address belongs to a known disposable or burner email provider, and whether it is a role-based account (e.g. info@, support@, admin@).
Example use cases
Screening signup form submissions
“Before we accept this new user registration, can you verify that the email address they provided — signup@mailinator.com — is legitimate, not a disposable burner, and actually has MX records configured so we can reach them?”
B2B lead list hygiene before outreach
“I'm about to email a list of leads and I want to clean it up first — can you check if sarah.jones@prospectcompany.io has valid MX, SPF, and DMARC records and isn't a role account or throwaway address?”
Diagnosing email deliverability issues
“Our emails to partners@vendorcorp.com keep bouncing — can you check if their domain actually has MX records set up, and whether SPF and DMARC are configured correctly?”
Technical details
Endpoint
GEThttps://company-enrich.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email health check combining syntax validation, disposable provider detection, role-account flagging, and real-time DNS MX/SPF/DMARC record verification in a single call — particularly for B2B lead enrichment pipelines, signup form screening, or pre-send deliverability audits where accuracy matters more than speed alone.
Side effects
- Invalid or malformed email string returns a syntax error response
- Domain does not exist in DNS — no MX records found, deliverability flagged as false
- DNS lookup timeout or temporary failure may result in inconclusive MX/SPF/DMARC results
- Disposable provider list may not cover every newly created throwaway service
- Payment not provided or x402 payment fails — request rejected with 402 status
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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