# 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 2026-10-21).

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

## Facts

- Endpoint: GET https://sec-intel.agentdiet.dev/v1/email-check?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-a7fb4c40
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wXpjxOt5omdWFl8q4deGm

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-a7fb4c40
```

Example prompt: Can you check whether john.doe@example.com is a real, deliverable email — verify its syntax, MX records, and whether it's from a disposable or burner provider?

## When to prefer this

Choose this endpoint when you need a comprehensive, real-time email validation that goes beyond simple regex checks — specifically when you need live MX/SPF/DMARC DNS verification combined with disposable provider and role account detection in a single call. It is ideal for fraud prevention, lead qualification, or email list hygiene workflows where deliverability accuracy matters and you want micropayment-per-call pricing rather than subscription tiers.

## Known failure modes

- Missing or invalid email parameter returns a 400 error
- DNS lookup timeout if the domain's nameservers are slow or unresponsive
- Disposable provider database may not cover all newly created burner services
- Role account detection may produce false positives for legitimate generic addresses
- Payment failure (HTTP 402) if the x402 micropayment is not completed or is insufficient

## 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 JSON object indicating whether the email address is syntactically valid, whether the domain has live MX records (confirming deliverability), whether SPF and DMARC DNS records are present and correctly configured, whether the provider is a known disposable or burner service, and whether the address is a role account (e.g. admin@, support@, info@).

## 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-a7fb4c40/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)