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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 whale-momentum.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://whale-momentum.agentdiet.dev/v1/email-check)
Output
Returns a structured object indicating whether the email address passes syntax validation, whether the domain is associated with a known disposable or burner provider, whether the address appears to be a role account (e.g. admin@, noreply@), and whether live DNS MX, SPF, and DMARC records exist for the domain — giving a comprehensive deliverability and legitimacy assessment.
Example use cases
Pre-send lead list scrubbing
“Before I upload these leads to my email campaign, can you verify that jane.doe@prospectco.com is a legitimate deliverable address — not a throwaway email — and that the domain has proper MX and SPF records set up?”
SaaS signup fraud prevention
“A new user just signed up with signup123@mailinator.com — can you check if that's a disposable or burner email address so I can decide whether to block the registration?”
B2B domain email audit
“I'm vetting a potential partner and want to know if their contact address deals@partnerco.io is reachable — does the domain have MX records, and are SPF and DMARC configured correctly?”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/email-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability and legitimacy check that goes beyond simple syntax validation — specifically when you need live DNS MX record confirmation, SPF/DMARC policy presence, disposable provider detection, and role account flagging in a single API call. Prefer this over basic regex-only validators when data quality, fraud prevention, or email campaign hygiene is critical.
Side effects
- Missing or malformed email parameter returns a validation error
- DNS lookup timeout or failure may cause incomplete MX/SPF/DMARC results
- Newly registered domains may not yet have propagated DNS records, causing false negatives
- Disposable provider databases may lag behind newly created burner services
- Non-existent TLDs or completely malformed addresses may return error responses
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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