How do I detect tempmail.at emails in my app?

Use Fidro's email validation API. Send a POST request to https://fidro.io/api/validate with the email address. The API returns a risk score and disposable_email flag for tempmail.at and 50,000+ other disposable domains in under 200ms. Code examples are available for cURL, Laravel, Node.js, and Python.

Should I block tempmail.at at signup?

For most applications, yes. tempmail.at has a severity rating of 3/5 in Fidro's database. Disposable email addresses from this domain are frequently used to abuse free tiers, create duplicate accounts, and bypass email verification. Add Fidro's API to your registration controller to block or flag these signups automatically.

What is the risk score for tempmail.at?

tempmail.at has a severity rating of 3/5 in Fidro's disposable email database. Signups from this domain are high risk: the email address will stop working within hours or days, you cannot reach the user for onboarding, and the account is likely being created to exploit free features. Fidro's API returns this risk score in real time so you can enforce blocking rules in your signup flow.

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Disposable Email Domain

Detect and block tempmail.at emails

tempmail.at is a known disposable email provider. Block it at signup with Fidro's API.

Severity: Medium (3/5) Source: disposable-email-domains

How to block tempmail.at in your app

Add Fidro's email validation API to your signup flow. One API call detects tempmail.at and 50,000+ other disposable domains in under 200ms.

curl -X POST https://fidro.io/api/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email": "user{{ $entry->domain }}"}'

// Response:
{
  "risk_score": 85,
  "recommendation": "Block",
  "checks": { "disposable_email": true }
}

// In your registration controller or form request
$response = Http::withToken(config('services.fidro.key'))
    ->post('https://fidro.io/api/validate', [
        'email' => $request->email,
    ]);

if ($response['checks']['disposable_email']) {
    return back()->withErrors([
        'email' => 'Disposable email addresses are not allowed.'
    ]);
}

const res = await fetch('https://fidro.io/api/validate', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${process.env.FIDRO_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ email: req.body.email }),
});

const data = await res.json();
if (data.checks.disposable_email) {
  return res.status(422).json({ error: 'Disposable emails not allowed' });
}

import requests

response = requests.post(
    'https://fidro.io/api/validate',
    headers={'Authorization': f'Bearer {FIDRO_API_KEY}'},
    json={'email': email},
)

result = response.json()
if result['checks']['disposable_email']:
    raise ValidationError('Disposable emails are not allowed')

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What does this mean for developers?

tempmail.at provides temporary, disposable email addresses that allow users to receive emails without revealing their real identity. These addresses are typically short-lived and self-destruct after a set period.

Users of disposable email services can sign up for your product, abuse free tiers, create multiple accounts, and disappear without a trace. This leads to inflated user counts, wasted resources, and increased fraud risk.

With a severity rating of 3/5, tempmail.at represents a moderate risk. We recommend flagging or blocking signups from this domain depending on your use case.