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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 defi-yield.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 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://defi-yield.agentdiet.dev/v1/email)
Output
Returns a structured object indicating: whether the email syntax is valid, whether the domain has live MX records (confirming the domain can receive mail), SPF and DMARC DNS record presence and content, whether the email comes from a known disposable/burner provider, and whether it is a role-based address (e.g. admin@, noreply@).
Example use cases
Block disposable emails at signup
“Before we create an account for this user, check whether signup@guerrillamail.com is a throwaway burner address or a legitimate email with real MX records — I want to block fake signups.”
Verify lead email before outreach
“I have a sales lead with the email cto@acmecorp.io — can you verify it's syntactically valid, not a role account, and that the domain actually has working MX and DMARC records before we reach out?”
Audit email DNS configuration
“Check the email security setup for support@example.com — does the domain have SPF and DMARC records configured, and are the MX records live and reachable?”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email validation that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC lookups combined with disposable provider and role-account detection in a single call. Prefer it for agent-native workflows that support x402 micropayments and need per-address validation at low cost ($0.005/call).
Side effects
- Invalid or malformed email input returns a syntax error response
- Domain with no DNS records may return MX lookup failure
- Temporary DNS resolution failures may cause false negatives on MX/SPF/DMARC checks
- Newly registered disposable provider domains may not yet be in the blocklist
- Payment failure via x402 results in HTTP 402 and no validation result
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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