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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 llms-generator.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown.
Validates an email address for syntax correctness, disposable/burner provider detection, role account status, and live DNS MX/SPF/DMARC record health.
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://llms-generator.agentdiet.dev/v1/mx-deliverability-verifier)
Output
Returns a structured object indicating: email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. admin@, info@), live MX record presence and priority, SPF record existence and content, and DMARC policy record — giving a full deliverability picture for the queried address.
Example use cases
Screening signups for throwaway emails
“Before activating this new user account, check if the email they signed up with — noreply123@mailinator.com — is a disposable or burner address and whether it has valid MX records.”
B2B outreach list hygiene
“I have a lead I want to email: contact@acmecorp.io — can you verify that the email is syntactically valid, that ACME's domain has working MX records, and that SPF and DMARC are configured so my message won't bounce or go to spam?”
Detecting role accounts before personalization
“Before I send a personalized sales email to admin@bigcompany.com, can you check if that's a real individual mailbox or a generic role account, and confirm the domain's DNS deliverability looks healthy?”
Technical details
Endpoint
POSThttps://llms-generator.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, live email deliverability check combining syntax validation, disposable provider detection, role account identification, and real-time DNS MX/SPF/DMARC record inspection in a single call — especially for B2B lead validation, signup fraud prevention, or pre-send email list hygiene workflows where bounce risk and spam filtering matter.
Side effects
- Invalid or missing email parameter returns a validation error
- DNS lookup timeouts for domains with slow or unresponsive nameservers
- Domains with no MX records flagged as undeliverable even if they accept mail via A record fallback
- Newly registered domains may lack SPF/DMARC records and be flagged as misconfigured
- Payment required error (HTTP 402) if x402 micropayment is not provided
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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