# mailcheck-dx Disposable Email Detector

> mailcheck-dx Disposable Email Detector is a paid API for AI agents from mailcheck-dx.hugen.tokyo, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Checks whether a given email address is disposable or temporary (e.g. from a throwaway email service) to help block fake signups and fraud.

## Facts

- Endpoint: POST https://mailcheck-dx.hugen.tokyo/disposable
- Price: $0.005/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mailcheck-dx-hugen-tokyo-b53cd9d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FEey6zN8rVqDv3bLkxriR

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-dx-hugen-tokyo-b53cd9d3 -d '<json body>'
```

Example prompt: Can you check if the email address 'user123@mailinator.com' is disposable or a throwaway address before I allow them to register on my platform?

## When to prefer this

Use this endpoint when you need a quick, low-cost check specifically for disposable or temporary email detection during user signup flows, fraud screening, or lead validation — especially when you want a dedicated disposability signal rather than a full email deliverability check. Prefer this over general email validation endpoints when the primary concern is blocking throwaway addresses.

## Known failure modes

- Invalid or malformed email address returns a 400 error
- Unknown or unrecognized domain may return inconclusive result
- Payment not included or insufficient USDC triggers 402 Payment Required
- Network timeout or server unavailability returns 5xx error
- Edge case: legitimate email domains mistakenly flagged as disposable (false positive)

## How this service works

Detects whether an email address is disposable or temporary to help block throwaway addresses during signups and fraud checks.

## Output

Returns a boolean or classification indicating whether the submitted email address belongs to a known disposable or temporary email provider, helping the caller decide whether to allow or block the signup.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mailcheck-dx-hugen-tokyo-b53cd9d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mailcheck-dx.hugen.tokyo](https://www.zero.xyz/host/mailcheck-dx.hugen.tokyo/llms.txt)