# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from cve-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-28).

Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX/SPF/DMARC record health.

## Facts

- Endpoint: POST https://cve-intel.agentdiet.dev/v1/disposable-email?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: cve-intel.agentdiet.dev
- Website: https://cve-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/cve-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-35a6de72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FjRTF7iumfUprVU8qTk2D

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cve-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-35a6de72 -d '<json body>'
```

Example prompt: Can you check whether john.doe@mailinator.com is a real, deliverable email address — specifically whether it's a disposable provider, has valid MX records, and passes SPF and DMARC checks?

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, disposable/burner domain detection, role account flagging, and live DNS MX/SPF/DMARC record verification — especially useful for B2B lead enrichment, user registration screening, or pre-send deliverability checks. Prefer this over basic regex validators when you need authoritative DNS-level confirmation of deliverability.

## Known failure modes

- Invalid or malformed email string returns a syntax error response
- Domain with no MX records returns non-deliverable status
- DNS lookup timeout for obscure or newly registered domains
- Rate limiting or payment failure (HTTP 402) if x402 payment not resolved
- Empty or missing email field returns validation error

## 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://cve-intel.agentdiet.dev/v1/disposable-email)

## Output

Returns a structured object indicating whether the email passes syntax validation, whether the domain is a known disposable/burner provider, whether it is a role-based account (e.g. admin@, noreply@), and the live DNS health of the domain including MX record presence, SPF record validity, and DMARC policy configuration.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "email"
 ],
 "properties": {
  "email": {
   "type": "string",
   "minLength": 1,
   "description": "Email address to validate for syntax, MX deliverability, and disposable risk"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cve-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-35a6de72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cve-intel.agentdiet.dev](https://www.zero.xyz/host/cve-intel.agentdiet.dev/llms.txt)