# B2A Email Deliverability, MX, SPF & DMARC Verifier

> B2A Email Deliverability, MX, SPF & DMARC Verifier is a paid API for AI agents from whale-momentum.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 verification.

## Facts

- Endpoint: GET https://whale-momentum.agentdiet.dev/v1/email-validator?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-0a2b0ce6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zHzTgM6eHeYvhnU29vIYm

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 whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-0a2b0ce6
```

Example prompt: Can you check whether john.doe@example.com is a real, deliverable email — specifically whether it has valid MX records, isn't from a disposable provider, and has SPF and DMARC configured?

## When to prefer this

Choose this endpoint when you need a comprehensive, real-time email validation that goes beyond simple syntax checking — specifically when you need live DNS MX lookup, SPF/DMARC record verification, and disposable or role-account detection in a single call. Ideal for lead enrichment pipelines, registration form validation, pre-campaign screening, or any agent workflow where email deliverability and authenticity matter.

## Known failure modes

- Invalid or malformed email syntax causes immediate validation failure
- Domain has no MX records resulting in undeliverable status
- DNS lookup timeout if domain DNS is slow or unresponsive
- Unknown or newly created domain may lack SPF/DMARC records, flagged as absent
- Payment required (HTTP 402) if x402 micropayment not included in request

## 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://whale-momentum.agentdiet.dev/v1/email-validator)

## Output

Returns a structured object indicating whether the email address is syntactically valid, whether the domain has live MX records enabling mail delivery, SPF and DMARC DNS record presence and details, whether the provider is a known disposable or burner service, and whether the address is a role-based account (e.g. admin@, info@, noreply@).

## 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/whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-0a2b0ce6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)