# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from shopify-spy.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-spy.agentdiet.dev/v1/email?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-3eab046c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F6mvGWdB5KZZl4TzJ5q8j

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-spy-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-3eab046c
```

Example prompt: Can you check if john.doe@tempmail.com is a real, deliverable email address — specifically whether it's from a disposable provider 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 validation that combines syntax checking, disposable/burner domain detection, role account flagging, and live DNS verification of MX, SPF, and DMARC records — especially in B2A or agent-automated workflows where paying per-call via HTTP 402 (x402/USDC) is acceptable. Prefer it over basic syntax-only validators when deliverability and fraud prevention are the goal, and over domain-only WHOIS tools when you need email-specific DNS records (MX, SPF, DMARC) verified in real time.

## Known failure modes

- Missing or empty email parameter returns a 400 validation error
- Malformed email string (no @ sign) may return syntax-invalid flag rather than DNS results
- DNS lookup timeout for obscure or offline domains may result in incomplete MX/SPF/DMARC data
- Payment failure via x402 returns 402 with payment details required
- Temporary DNS resolver outages may cause intermittent failures on record lookups
- Very new domains may not yet have propagated DNS records, causing 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-spy.agentdiet.dev/v1/email)

## Output

Returns a structured JSON object indicating whether the email address passes syntax validation, whether the domain belongs to a known disposable or burner provider, whether the address appears to be a role account (e.g. info@, admin@), and the live DNS lookup results for MX, SPF, and DMARC records including their presence and configuration status.

## 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-spy-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-3eab046c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)