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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 identification, and live DNS MX/SPF/DMARC record lookup to confirm 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/mx-check)
Output
Returns a structured object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address is role-based (e.g. admin@, info@), and live DNS lookup results for MX, SPF, and DMARC records — giving a complete picture of whether the address is likely to receive email.
Example use cases
Pre-send email list hygiene
“Before I launch this email campaign, check whether marketing@bigcorp.io is actually deliverable — validate the syntax, confirm MX records exist, and flag it if it's a role account or comes from a burner provider.”
User signup fraud detection
“A new user just signed up with the address temp.user99@mailnull.com — can you verify whether this is a disposable or burner email and check if the domain has valid MX records before I allow the account?”
B2B lead email verification
“I've got a lead with the contact email ceo@startupxyz.co — run a full deliverability check on it: syntax, MX records, SPF, and DMARC, so I know if it's safe to reach out.”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/mx-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability check that combines syntax validation, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC lookup in a single call — especially useful for agent workflows handling user signups, B2B lead enrichment, or pre-campaign email list cleaning where deliverability and fraud risk both matter.
Side effects
- Invalid or missing email parameter returns an error
- DNS timeout or unreachable nameserver may result in inconclusive MX/SPF/DMARC results
- Newly registered domains may not yet have propagated DNS records, causing false negatives
- Disposable provider database may lag behind newly created burner services
- Payment failure (HTTP 402) if USDC balance is insufficient
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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