# 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.

## Facts

- Endpoint: GET https://shopify-intel.agentdiet.dev/v1/mx-deliverability-verifier?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-9734f6aa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y4dLzXrfxcxefl4Lcl8X0

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-9734f6aa
```

Example prompt: Can you check if john.doe@example.com is a real, deliverable email address — specifically whether it has valid MX records, isn't from a disposable provider, and has SPF and DMARC set up properly?

## When to prefer this

Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple regex syntax checks — specifically when you need live DNS MX verification, SPF/DMARC security record checks, and disposable/role-account detection in a single call. Prefer it over generic email syntax validators when deliverability and fraud screening are both concerns, such as before onboarding users, enriching B2B leads, or configuring email outreach campaigns.

## Known failure modes

- Missing or malformed email parameter returns a validation error
- Non-existent domain causes DNS lookup failures for MX/SPF/DMARC with appropriate flags
- Temporary DNS resolution timeouts may produce inconclusive deliverability results
- Disposable provider database may not cover all emerging throwaway email services
- Payment failure (HTTP 402) if x402 micropayment is not properly handled

## 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/mx-deliverability-verifier)

## Output

Returns a structured object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, noreply@), live MX record lookup results, SPF record presence and value, and DMARC record presence and policy — collectively summarizing the deliverability and trustworthiness of the email address.

## 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-9734f6aa/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)