# 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 2026-10-23).

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://company-enrich.agentdiet.dev/v1/email-validator?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-36f56d6e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UTo06Ue4cjII0GOhLQu1S

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-36f56d6e -d '<json body>'
```

Example prompt: Can you check if john.doe@example.com is a real, deliverable email — look at whether the domain has valid MX records, SPF and DMARC policies, and whether it's a disposable or role-based address?

## When to prefer this

Choose this endpoint when you need a comprehensive, live email verification that goes beyond syntax checking — specifically when you need simultaneous MX, SPF, and DMARC DNS validation plus disposable provider and role account detection in a single call. Prefer it over simple regex validators when deliverability and lead quality matter, and over domain-only tools when the full email address is available. Particularly well-suited for B2B lead enrichment pipelines, signup fraud prevention, and pre-campaign deliverability audits.

## Known failure modes

- Email address missing or empty — 400 validation error
- Domain has no MX records — deliverability flag set to false
- DNS lookup timeout — partial result or error on MX/SPF/DMARC fields
- Malformed email syntax — syntax check fails immediately
- Disposable provider database miss — may not catch very new throwaway services
- Payment not settled via x402 — 402 Payment Required response

## 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/email-validator)

## Output

Returns a structured object indicating whether the email address passes syntax validation, whether the sending domain has live MX records, whether SPF and DMARC DNS records are present and valid, whether the provider is a known disposable or burner service, and whether the address is a role account (e.g. info@, admin@, support@).

## 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-36f56d6e/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)