# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from shopify-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, and DMARC record checks to determine deliverability.

## Facts

- Endpoint: GET https://shopify-intel.agentdiet.dev/v1/email-validator?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-intel.agentdiet.dev
- Website: https://shopify-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-a2d45211
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PgbnSy6ArB609Kt8D-1tY

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 shopify-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-a2d45211
```

Example prompt: Can you check if john.doe@example.com is a real, deliverable email address — verify the syntax, DNS mail records, and whether it's a disposable or role account?

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call email validation that combines syntax checking, live DNS deliverability (MX/SPF/DMARC), and disposable/role-account detection in one response — especially in agent workflows that need to screen leads, prevent fraud at signup, or clean contact lists before outreach. Prefer this over simple regex-only validators when DNS-level deliverability confidence is required.

## Known failure modes

- Missing or empty email parameter returns a 400 validation error
- Malformed email string (no @ symbol) returns syntax failure immediately
- DNS lookup timeout for obscure TLDs may result in inconclusive MX/SPF/DMARC status
- Payment not provided or insufficient funds returns HTTP 402
- Disposable provider database may not include newly created burner services, leading to false negatives

## 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://shopify-intel.agentdiet.dev/v1/email-validator)

## Output

Returns a structured object indicating whether the email address passes syntax checks, whether the domain is associated with a known disposable/burner provider, whether the local part is a role account (e.g. admin, noreply), and the live DNS lookup results for MX, SPF, and DMARC records — collectively giving a deliverability verdict.

## 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/shopify-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-a2d45211/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-intel.agentdiet.dev](https://www.zero.xyz/host/shopify-intel.agentdiet.dev/llms.txt)