# 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, disposable/burner provider status, role account flags, and live DNS MX/SPF/DMARC record checks to assess deliverability risk.

## Facts

- Endpoint: POST https://shopify-intel.agentdiet.dev/v1/email-verify?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-2ee68009
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IerflGDLBLhzKgjcmfqFu

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-2ee68009 -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call email check that combines syntax validation, disposable provider detection, role account identification, and live DNS MX/SPF/DMARC lookups — rather than separate tools for each layer. Particularly valuable for lead enrichment pipelines, signup fraud prevention, and pre-send deliverability screening where a false positive (emailing an invalid or risky address) has meaningful cost.

## Known failure modes

- Invalid or missing email field returns a validation error
- DNS lookup timeout for obscure or newly registered domains may result in inconclusive MX/SPF/DMARC results
- Newly created disposable providers not yet in blocklists may pass the burner check
- Private/internal domains with no public MX records will appear undeliverable even if valid
- Rate limiting or payment failure (402) if x402 USDC balance 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://shopify-intel.agentdiet.dev/v1/email-verify)

## Output

Returns a structured object indicating: whether the email passes syntax checks, whether the domain belongs to a known disposable/burner provider, whether it is a role-based address (e.g. admin@, info@), and the live DNS lookup results for MX, SPF, and DMARC records, collectively indicating whether the address is safe to email and likely to be delivered.

## 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-2ee68009/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)