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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 email-verify.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 health.
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://email-verify.agentdiet.dev/v1/spf-dmarc-auditor)
Output
Returns a structured JSON object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), live MX record existence and values, SPF record presence and policy, and DMARC record presence and policy — giving a full deliverability and email security posture for the provided address.
Example use cases
Pre-send deliverability check for outreach
“Before I send my sales outreach campaign, can you verify that contact@acmecorp.com is a real deliverable address — check its MX records and whether the domain has proper SPF and DMARC configured?”
Blocking throwaway emails at signup
“A new user just signed up with the address tmpmail_x7k@guerrillamail.com — can you check whether this is a disposable or burner email address I should block?”
Email security audit for a domain
“I want to audit the email security posture of our vendor's domain — can you check whether the address billing@vendor-corp.io has valid MX, SPF, and DMARC DNS records and flag any misconfigurations?”
Technical details
Endpoint
GEThttps://email-verify.agentdiet.dev/v1/spf-dmarc-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, single-call validation that covers both email address hygiene (syntax, disposable detection, role accounts) and DNS-level email security posture (MX, SPF, DMARC) in one request. Prefer it over basic syntax-only validators when deliverability and anti-spam signal accuracy matter, or over domain-only DMARC checkers when you need to verify a specific email address end-to-end.
Side effects
- Invalid or malformed email address returns a syntax error response
- Domain has no MX records — flagged as undeliverable
- DNS lookup timeout or failure for MX/SPF/DMARC records
- Payment not provided or insufficient (HTTP 402) — request blocked
- Rate limiting exceeded — HTTP 429 returned
- Domain exists but has no SPF or DMARC records — returned as missing/unconfigured
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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