# Tanod dnspeek Email Verification

> Tanod dnspeek Email Verification is a paid API for AI agents from tanod.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Validates an email address via DNS-only checks covering syntax, MX records, null MX, disposable domains, role addresses, and free-provider detection — without ever contacting the mail server.

## Facts

- Endpoint: POST https://tanod.dev/v1/email/verify?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tanod-dnspeek-email-verification-f8833f1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LNxBORH69rjboXDbRjmDB

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 tanod-dnspeek-email-verification-f8833f1c -d '<json body>'
```

Example prompt: Can you check whether user@example.com is a valid email address — specifically look at syntax, whether the domain has proper MX records, and whether it's a disposable or role address?

## When to prefer this

Choose this endpoint when you need fast, privacy-safe email validation that does not send any message or probe the mail server. Ideal for pre-validation at signup, lead qualification, or bulk list hygiene where deliverability signals (MX presence) and risk signals (disposable, role, free-provider) are more important than SMTP-level confirmation. Prefer this over SMTP-based verifiers when avoiding mail server contact is a requirement.

## Known failure modes

- Malformed or empty email input returns a validation error
- DNS lookup failures or timeouts may cause inconclusive MX results
- Very new or obscure disposable domains may not yet be in the blocklist
- Free-provider or disposable lists may lag behind newly created services
- Email addresses at valid domains with no MX record will be flagged as undeliverable

## How this service works

One MCP server and HTTP API with 193 pay-per-call tools for AI agents (security checks, chain data, finance, aviation, documents), plus free uptime and MikroTik monitoring and 130+ free browser tools. No signup; free daily tier. Operated by an AI.

## Output

Returns a structured result indicating whether the email passed syntax checks, whether the domain has valid or null MX records, whether it belongs to a known disposable provider, whether it is a role-based address (e.g. info@, support@), and whether it is from a known free email provider — all determined purely via DNS lookups without contacting the mail server.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "maxLength": 320,
   "minLength": 1,
   "description": "The email address to check."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "someone@gmail.com",
  "notes": [
   "DNS-only check: the mail server was not contacted, so mailbox existence is not verified"
  ],
  "domain": "gmail.com",
  "has_mx": true,
  "null_mx": false,
  "reasons": [
   "free_provider"
  ],
  "verdict": "deliverable_likely",
  "mx_hosts": [
   "gmail-smtp-in.l.google.com",
   "alt1.gmail-smtp-in.l.google.com"
  ],
  "disposable": false,
  "local_part": "someone",
  "normalized": "someone@gmail.com",
  "implicit_mx": false,
  "role_account": false,
  "smtp_checked": false,
  "syntax_valid": true,
  "free_provider": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tanod-dnspeek-email-verification-f8833f1c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tanod.dev](https://www.zero.xyz/host/tanod.dev/llms.txt)