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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 mesh.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://mesh.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured object indicating whether the email passes syntax checks, whether the domain belongs to a known disposable or burner provider, whether it is a role-based address (e.g. admin@, info@), and the live DNS status of MX records (mail server reachability), SPF records (sender policy), and DMARC records (domain-based message authentication policy).
Example use cases
Screening sign-up form emails
“Before I add this new user to our database, can you verify that their email address sarah.jones@tempmail.io isn't from a disposable provider and actually has MX records set up so we can reach them?”
B2B lead list email hygiene
“I have a potential lead at contact@acmecorp.com — can you check if it's a real deliverable address, flag if it's a role-based email, and tell me if that domain has SPF and DMARC configured?”
Email infrastructure audit for outreach
“We're about to send a cold outreach campaign and I want to make sure our target domain's email infrastructure is solid — can you check the MX, SPF, and DMARC records for ceo@bigclient.com?”
Technical details
Endpoint
GEThttps://mesh.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-layer email validation that goes beyond simple regex — specifically when you need live DNS MX/SPF/DMARC lookups combined with disposable-provider and role-account detection in a single call. Prefer it over basic syntax validators when building lead generation pipelines, sign-up form guards, or email outreach tools where deliverability and domain authentication matter.
Side effects
- Missing or invalid email parameter returns a 400-level error
- Domain with no MX records returns a deliverability failure flag
- Network or DNS timeout may cause live record lookups to fail
- Disposable provider lists may not be exhaustive, causing false negatives for newer burner services
- Non-existent TLDs or malformed email strings may return syntax 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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