# 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/DMARC record health.

## Facts

- Endpoint: POST https://company-enrich.agentdiet.dev/v1/spf-dmarc-auditor?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-792364ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uWoUcuZygOOGtrLdQ7Frn

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-792364ae -d '<json body>'
```

Example prompt: Can you verify whether john.doe@acme-corp.com is a real, deliverable email address — check syntax, MX records, and whether it's from a disposable provider, and also audit the domain's SPF and DMARC setup?

## When to prefer this

Choose this endpoint when you need a comprehensive, multi-signal email validation in a single call — covering syntax, DNS deliverability (MX), email security posture (SPF/DMARC), disposable provider detection, and role account flagging simultaneously. Prefer it over simple syntax checkers when you need live DNS verification, or over domain-only tools when the full email address and per-address disposable/role checks are needed. Particularly well-suited for B2B lead enrichment pipelines, SaaS signup fraud prevention, and pre-send email campaign hygiene.

## Known failure modes

- DNS timeout or unreachable DNS servers may cause MX/SPF/DMARC lookups to fail or return incomplete results
- Malformed or missing email address input returns a validation error
- Unknown or newly registered domains may lack MX/SPF/DMARC records, resulting in 'not configured' flags rather than errors
- Disposable provider database may not include very new burner domains
- Rate limiting or payment failure (x402) may prevent the request from completing

## 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/spf-dmarc-auditor)

## Output

Returns a structured object indicating: email syntax validity, whether the domain uses a known disposable/burner provider, whether the local part is a role account (e.g. info@, noreply@), live MX record presence and details, SPF record content and validity, and DMARC policy record content and configuration.

## 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-792364ae/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)