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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/spf-dmarc-auditor)
Output
Returns a structured object indicating whether the email address passes syntax validation, whether the domain has live MX records (confirming deliverability), whether the address belongs to a known disposable or burner email provider, whether it is a role-based account (e.g. info@, support@), and whether the domain's DNS includes valid SPF and DMARC records.
Example use cases
Lead email screening before outreach
“Before I add this lead to my CRM campaign, check if sarah.jones@tempmail.io is a real deliverable email or a throwaway — I need to know if the MX records exist and if it's flagged as a burner provider.”
Email authentication audit for a domain
“Can you check user@acmecorp.com to see if their domain has SPF and DMARC DNS records properly configured? I'm assessing their email security posture.”
Sign-up form spam detection
“A new user just registered with the email admin@guerrillamail.com — can you tell me if that's a role account or disposable/burner address before I approve their account?”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive single-call check combining syntax validation, live DNS MX lookup, SPF/DMARC authentication record auditing, and disposable/role account detection — rather than using separate tools for each concern. Ideal for B2B lead enrichment pipelines, sign-up fraud prevention, or pre-send email list hygiene where both deliverability and security posture matter.
Side effects
- Missing or invalid email parameter returns a 400-level error
- DNS lookup timeout if the domain's nameservers are slow or unreachable
- False negatives on newer disposable providers not yet in the blocklist
- Role account detection may miss uncommon role prefixes
- DMARC/SPF records may be stale if DNS TTL is high
- HTTP 402 payment required if x402 micropayment is not properly attached
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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