# mailcheck.hugen.tokyo Disposable Email Detection

> mailcheck.hugen.tokyo Disposable Email Detection is a paid API for AI agents from mailcheck.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Checks whether an email address belongs to one of 5,000+ known disposable/temporary email domains and returns a boolean result

## Facts

- Endpoint: GET https://mailcheck.hugen.tokyo/mailcheck/disposable
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mailcheck-hugen-tokyo-7cec6283
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B-RjZHUDjVcM8iA5Ajh5B

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 mailcheck-hugen-tokyo-7cec6283
```

Example prompt: Check if the email address 'user@guerrillamail.com' is from a disposable or temporary email provider — I need a simple yes/no so I can decide whether to block this signup.

## When to prefer this

Use this endpoint when you need a fast, single-purpose disposable email check without the overhead of a full validation suite. Ideal for high-volume real-time signup flows where you only need to know if the domain is disposable and don't need syntax checking, MX verification, or typo suggestions. Prefer the full 6-check endpoint if you need comprehensive email validation in one call.

## Known failure modes

- Missing or malformed email address returns 400 error
- Unknown or unlisted disposable domains may return false negative (false = not disposable) even if they are newly created throwaway services
- Payment not included or invalid USDC payment returns 402 Payment Required
- Network timeout for slow DNS or connectivity issues
- Domain not in blocklist due to infrequent updates may miss very new disposable services

## How this service works

Instant disposable email detection — checks against 5,000+ known temporary email domains (Guerrilla Mail, Mailinator, Temp Mail, 10MinuteMail, and more). Returns boolean result. Maintaining this blocklist yourself requires weekly updates from multiple sources. Accepts USDC payments on Base and Solana

## Output

Returns a boolean indicating whether the email domain is on the disposable email blocklist (covering 5,000+ known temporary providers like Guerrilla Mail, Mailinator, Temp Mail, and 10MinuteMail)

## Example request

```json
{
 "domain": "guerrillamail.com"
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mailcheck-hugen-tokyo-7cec6283/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mailcheck.hugen.tokyo](https://www.zero.xyz/host/mailcheck.hugen.tokyo/llms.txt)