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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 status, role account detection, and live DNS MX/SPF/DMARC record checks to assess 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-deliverability-verifier)
Output
Returns a structured JSON object indicating email syntax validity, whether the domain belongs to a known disposable/burner provider, whether the address appears to be a role account (e.g. admin@, support@), and live DNS lookup results for MX, SPF, and DMARC records — giving a comprehensive deliverability assessment.
Example use cases
Scrub leads before cold outreach
“Before I start this email campaign, can you verify that sarah.jones@techcorp.io is a real deliverable address — check its MX records, SPF, DMARC, and make sure it's not a throwaway or role account?”
Block disposable signups at registration
“A user just signed up with guerrillamail123@guerrillamail.com — can you check if that's a disposable or burner email address so I can decide whether to block the account?”
Audit contact list email quality
“I need to know if noreply@bigbrand.com is a role account and whether bigbrand.com actually has MX records configured — can you run a full deliverability check on it?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, real-time email deliverability assessment that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC verification, disposable provider detection, and role account flagging in a single call. Ideal for pre-outreach lead validation, signup fraud prevention, and contact list hygiene workflows.
Side effects
- Missing or malformed email parameter returns a validation error
- DNS lookup timeouts may result in inconclusive MX/SPF/DMARC results
- Newly registered or very obscure domains may lack sufficient DNS data
- Disposable provider database may not cover all burner services
- Payment required (HTTP 402) if x402 micropayment not included
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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