# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from sec-intel.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 detection, role account flags, and live DNS MX, SPF, and DMARC record checks.

## Facts

- Endpoint: GET https://sec-intel.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: sec-intel.agentdiet.dev
- Website: https://sec-intel.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-6bde2704
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__gvnyDmgmazpGy1mZJnhZ

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 sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-6bde2704
```

Example prompt: Can you check whether john.doe@tempmail.org is a real, deliverable email address — flag if it's disposable, a role account, or if the domain is missing proper MX, SPF, or DMARC records?

## When to prefer this

Choose this endpoint when you need a multi-signal email check combining syntax validation, real-time DNS lookups (MX, SPF, DMARC), disposable provider detection, and role account flagging in a single call — particularly useful for agent workflows requiring fraud screening at signup, lead qualification, or pre-send list hygiene. Prefer it over simple regex validators when live DNS verification and burner-email detection are both required.

## Known failure modes

- Missing or malformed email parameter returns a validation error
- DNS timeout or unreachable nameserver may result in incomplete MX/SPF/DMARC data
- Newly registered disposable domains not yet in blocklists may not be flagged
- Very long or unusual TLDs may produce unexpected syntax results
- Rate limiting or payment failure (402) if quota exceeded without valid x402 payment

## 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://sec-intel.agentdiet.dev/v1/disposable-email)

## Output

Returns a structured object indicating whether the email passes syntax validation, whether the domain is associated with a disposable or burner provider, whether it is a role-based account (e.g. admin@, info@), and the live DNS status of MX, SPF, and DMARC records for the domain — giving a comprehensive deliverability and 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/sec-intel-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-6bde2704/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sec-intel.agentdiet.dev](https://www.zero.xyz/host/sec-intel.agentdiet.dev/llms.txt)