# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from sec-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-23).

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://sec-intel.agentdiet.dev/v1/email-check?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: sec-intel.agentdiet.dev
- Website: https://sec-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-f8e56531
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uVU0VyL5KsFm0zm4q2kC1

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 sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-f8e56531 -d '<json body>'
```

Example prompt: Can you check if john.doe@example.com is a real, deliverable email address — flag if it's a disposable/burner provider, a role account, or if the domain is missing valid MX, SPF, or DMARC records?

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call email health check that combines syntax validation, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC verification. It is particularly useful for fraud prevention at signup, pre-send deliverability checks, and email security audits — situations where you need more than a simple regex check and want live DNS confirmation without building your own DNS resolver pipeline.

## Known failure modes

- Missing or malformed email input returns a 400-level error
- DNS lookup timeouts may occur for obscure or unreachable domains
- Newly registered domains may lack MX/SPF/DMARC records and return empty DNS results
- Disposable provider lists may not cover all burner services, leading to false negatives
- Payment failure via x402 will block the request before validation occurs

## 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://sec-intel.agentdiet.dev/v1/email-check)

## Output

Returns a structured object indicating whether the email passes syntax validation, whether the provider is a known disposable/burner service, whether the address appears to be a role account (e.g. admin@, info@), and the live DNS status of MX, SPF, and DMARC records for the domain.

## 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/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-f8e56531/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-intel.agentdiet.dev](https://www.zero.xyz/host/sec-intel.agentdiet.dev/llms.txt)