# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from company-enrich.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/DMARC record checks to assess deliverability and inbox risk.

## Facts

- Endpoint: GET https://company-enrich.agentdiet.dev/v1/disposable-email?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: company-enrich.agentdiet.dev
- Website: https://company-enrich.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/company-enrich-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-5f80332e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NaatIF7C_xV3DbPX91jxD

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 company-enrich-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-5f80332e
```

Example prompt: Can you check whether john.doe@tempmail.com is a real, deliverable email address — specifically tell me if it's a disposable/burner provider, whether the domain has valid MX records, and if SPF and DMARC are properly configured?

## When to prefer this

Choose this endpoint when you need a multi-signal email validation that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC verification combined with disposable provider detection and role account flagging in a single call. Ideal for pre-send deliverability audits, fraud-prevention signup flows, and B2B lead enrichment pipelines where inbox reachability and sender reputation protection matter.

## Known failure modes

- Missing or malformed email parameter returns a 400/validation error
- DNS lookup timeouts may cause incomplete MX/SPF/DMARC results for slow resolvers
- Newly registered disposable domains not yet in the blocklist may pass the disposable check
- Private or internal email domains may return no public DNS records
- Payment failure via x402 returns a 402 response requiring USDC on Base

## 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://company-enrich.agentdiet.dev/v1/disposable-email)

## Output

Returns a structured object indicating whether the email passes syntax validation, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. admin@, noreply@), and live DNS lookup results including MX record presence, SPF record content, and DMARC policy — giving a comprehensive deliverability and inbox risk assessment.

## 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/company-enrich-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-5f80332e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from company-enrich.agentdiet.dev](https://www.zero.xyz/host/company-enrich.agentdiet.dev/llms.txt)