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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 json-repair.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 detection, role account flagging, and live DNS MX/SPF/DMARC record checks to determine deliverability.
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://json-repair.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured JSON object indicating email syntax validity, whether the domain belongs to a known disposable/burner provider, whether the local part is a role account (e.g. admin@, noreply@), live MX record resolution results, SPF record presence and content, and DMARC policy details — enabling a full deliverability and trustworthiness assessment.
Example use cases
CRM lead email quality gate
“Before we import this batch of sales leads, check if the contact email david.chen@startupxyz.io is actually deliverable — validate the syntax, confirm MX records exist, and tell me if it's from a burner or disposable email service.”
Sign-up fraud prevention check
“A new user just registered with the email admin@mailinator.com — can you verify whether it's a real deliverable address or a disposable/role account we should block?”
Email domain DNS compliance audit
“We're about to send a cold outreach campaign to prospects at partnerfirm.com — can you check whether their domain has valid MX records, and whether SPF and DMARC are properly configured so our emails won't bounce or get flagged?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single API call that combines email syntax checking, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC record validation — especially in B2B lead enrichment, CRM hygiene, sign-up fraud prevention, or cold outreach compliance workflows. Prefer this over basic regex-only validators when live DNS verification is required.
Side effects
- Missing or invalid 'email' parameter returns an error
- DNS lookup timeout if the domain's nameservers are unresponsive
- Domain has no MX records (email undeliverable)
- SPF or DMARC records absent (returned as not configured, not an API error)
- Disposable provider list may lag new burner domains
- Payment required (HTTP 402) if x402 USDC micropayment not provided
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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