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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 2026-10-23).
Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record verification.
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/mx-deliverability-verifier)
Output
Returns a structured object indicating email syntax validity, whether the domain uses a known disposable or burner email provider, whether the address appears to be a role account (e.g. info@, admin@), and the live DNS state of the domain's MX, SPF, and DMARC records — giving a full picture of deliverability risk.
Example use cases
Pre-send lead list scrubbing
“Before we send our outreach campaign, check if the email contact@acmecorp.io is actually deliverable — does it have working MX records, is it a disposable address, and does the domain have SPF set up?”
Signup fraud detection
“A new user just signed up with the email temp_user123@mailinator.com — can you verify whether it's a burner or disposable email address and whether it would even be deliverable?”
B2B domain mail hygiene audit
“We're about to email our enterprise prospect at ceo@bigclient.com — can you verify the email syntax is correct, check live MX and DMARC records on that domain, and tell me if it looks like a role account?”
Technical details
Endpoint
POSThttps://email-verify.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call check covering email syntax, real-time DNS MX lookup, SPF/DMARC presence, disposable provider detection, and role account flagging — particularly in agentic B2B lead enrichment, fraud prevention at signup, or pre-campaign list hygiene workflows where bounce rates and deliverability matter.
Side effects
- Invalid or malformed email input returns a validation error
- DNS lookup failure if the domain does not exist or is unreachable
- Timeout errors if DNS resolution is slow or unresponsive
- False negatives on very new disposable provider domains not yet in blocklists
- Missing SPF/DMARC records reported as absent rather than as errors
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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