# 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 2026-10-23).

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

## Facts

- Endpoint: POST https://shopify-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: 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-5981ac16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xRZ2zBGeNtoDusw7qyqJp

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-5981ac16 -d '<json body>'
```

Example prompt: Can you verify whether john.doe@acme.com is a real, deliverable email — check the syntax, confirm the domain has MX records, and flag it if it's from a disposable provider or set up as a role account?

## When to prefer this

Choose this endpoint when you need a single, comprehensive email check that covers syntax, live DNS MX/SPF/DMARC records, disposable provider detection, and role-account flagging in one call — particularly in B2A/agent pipelines where cost-per-call ($0.005) matters and you want x402 micropayment-native, MCP-compatible access without setting up your own DNS resolver stack.

## Known failure modes

- Invalid or missing email field returns a validation error
- DNS lookup timeouts if the domain's nameservers are unresponsive
- Unknown disposable provider may not be flagged if not in provider database
- Rate limiting or payment failure (HTTP 402) if USDC balance is insufficient
- Malformed email strings that pass syntax checks but are not real addresses

## 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-check)

## 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, and the live DNS status of the domain's MX, SPF, and DMARC records — giving a full deliverability and authentication picture for the queried 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-5981ac16/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)