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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 existence 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/mx-deliverability-verifier)
Output
Returns a structured object indicating: email syntax validity, whether the domain has live MX records, presence of SPF and DMARC DNS records, whether the provider is a known disposable/burner service, and whether the address is a role account (e.g. info@, admin@, noreply@).
Example use cases
Scrub leads before outbound campaign
“Before we send our outreach campaign, check if contact@techstartup.io is a real deliverable email — does it have MX records, is it a disposable address, and does the domain have SPF and DMARC set up?”
Block disposable emails at sign-up
“A user just tried to register with temp-mail123@guerrillamail.com — can you verify if this is a disposable or burner email address so I can decide whether to block the account?”
Audit CRM email list quality
“I need to validate sales@bigcorp.com — check if it's a role account, whether the domain has proper MX and DMARC records, and whether it's likely to actually deliver.”
Technical details
Endpoint
GEThttps://email-verify.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability check that goes beyond simple regex validation — specifically when you need live DNS MX/SPF/DMARC lookups combined with disposable provider and role account detection in a single call. Prefer it over simple syntax validators when list hygiene, lead qualification, or fraud prevention is the goal.
Side effects
- Invalid or malformed email input returns a syntax error
- DNS lookup timeout if the domain's nameservers are slow or unreachable
- Unknown or newly registered domains may lack MX/SPF/DMARC records, resulting in undeliverable flags
- Payment required (HTTP 402) if x402 micropayment is not included or insufficient
- Disposable provider lists may not cover every burner service, leading to false negatives
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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