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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 2026-10-21).
Validates an email address for syntax correctness, disposable/burner provider status, role-account detection, and live DNS MX, SPF, and DMARC record presence.
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-check)
Output
Returns a structured object indicating whether the email passes syntax validation, whether the domain has live MX records (meaning it can receive email), whether SPF and DMARC DNS records are present, whether the address belongs to a known disposable/burner email provider, and whether it is a role-based address (e.g. info@, support@, admin@).
Example use cases
Pre-signup email gating
“Before we create an account for the user who entered signup@mailinator.com, check if that email is real and deliverable or if it's a disposable burner address we should reject.”
B2B lead list hygiene
“I scraped a list of leads and want to start with info@techcorp.io — can you verify whether that email has valid MX records, is a role address, and whether the domain has SPF and DMARC configured?”
Email campaign deliverability check
“We're about to send a campaign to newsletter@startup.dev — can you confirm the domain's mail records are set up properly with MX, SPF, and DMARC so our emails won't bounce or land in spam?”
Technical details
Endpoint
GEThttps://alpha-stream.agentdiet.dev/v1/email-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a comprehensive, single-call check covering email syntax, live DNS deliverability (MX), domain authentication posture (SPF/DMARC), and spam-risk signals (disposable/role) — especially during user onboarding, lead enrichment, or pre-campaign hygiene workflows where you want to avoid wasting sends on undeliverable or fraudulent addresses.
Side effects
- Malformed or missing email parameter returns a validation error
- DNS lookup timeouts for slow-responding mail servers may produce inconclusive MX results
- Newly registered domains may lack MX/SPF/DMARC records even for legitimate addresses
- Disposable provider lists may not include very new or obscure burner services
- Non-existent TLDs or syntactically impossible addresses return immediate syntax failure
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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