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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 alpha-stream.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 lookups.
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://alpha-stream.agentdiet.dev/v1/email)
Output
Returns a structured object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, noreply@), and live DNS lookup results for MX records (mail server presence), SPF policy, and DMARC policy — giving a comprehensive deliverability and trustworthiness assessment.
Example use cases
Signup fraud prevention filter
“Before letting this user register, check if the email address they submitted — temp1234@mailinator.com — is from a disposable or burner provider, and whether it has valid MX records at all.”
B2B outreach list hygiene
“I have a lead with the email contact@acmecorp.io — can you verify it's syntactically valid, not a role account, and that the domain has proper MX, SPF, and DMARC records before I add it to my outreach campaign?”
SaaS email health check before send
“We're about to send a transactional email to user@startup.dev — can you quickly check if that address is deliverable by looking up its MX records and confirming the domain has SPF and DMARC configured?”
Technical details
Endpoint
POSThttps://alpha-stream.agentdiet.dev/v1/email?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single-call, multi-signal email validation that combines syntax checking, live DNS MX/SPF/DMARC lookups, and disposable/role account detection — especially in B2B lead enrichment, signup fraud prevention, or pre-send deliverability checks. It is particularly suited for agent workflows requiring real-time, authoritative DNS verification rather than static blocklist-only checks.
Side effects
- Missing or malformed email input returns a 400 validation error
- DNS lookup timeouts if the domain's nameservers are unresponsive
- Unknown or very new TLDs may not resolve MX records correctly
- Payment failure or insufficient balance returns HTTP 402
- Disposable provider database may not cover brand-new burner services
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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