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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, $0.005000/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/DMARC record presence.
Price / call$0.005000
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/a2a)
Output
Returns a structured object indicating email syntax validity, whether the address belongs to a known disposable/burner email provider, whether it is a role account (e.g. admin@, info@), and the live DNS status of MX, SPF, and DMARC records for the email's domain — collectively indicating overall deliverability health.
Example use cases
Lead list email hygiene
“Before we import this lead list, can you verify that sarah.jones@prospectco.com is a real deliverable address — check its MX records, make sure it's not a burner or role account, and confirm the domain has SPF and DMARC set up?”
Signup fraud detection
“A new user just registered with the email temp-mail-99@guerrillamail.com — can you check if that's a disposable or throwaway address before I let them into the platform?”
Cold outreach pre-send audit
“I'm about to send a cold email to ceo@bigcorp.io — can you verify it's syntactically valid, the domain has working MX records, and it's not flagged as a role or generic inbox?”
Technical details
Endpoint
POSThttps://email-verify.agentdiet.dev/a2a?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a multi-signal email validation that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC verification combined with disposable provider and role account detection in a single call. Ideal for lead enrichment pipelines, signup fraud prevention, and pre-send deliverability audits where knowing whether a domain is actually configured to receive mail matters as much as whether the address looks valid.
Side effects
- Invalid or missing email parameter returns a validation error
- DNS lookup timeout if the domain's nameservers are slow or unresponsive
- Unknown disposable provider status if the domain is too new to be in blocklists
- Generic 500 error if upstream DNS resolution fails
- Rate limiting or payment failure (HTTP 402) if x402 payment is not properly handled
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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