How to Detect Disposable Emails in Your Signup Forms (Free API)

Hey everyone, fake signups and spam accounts are a real problem for any web app. One of the simplest ways to fight them is to block disposable email addresses (like temp-mail, throwaway, etc.).

I built Disposable Email Detector - a fast, free API that checks if an email is disposable, temporary, or fake.

What It Does

• Checks email syntax and domain validity.
• Detects disposable/temp-mail email addresses.
• Uses a database of 160,000+ known disposable domains, updated daily.
• Also identifies free email providers (Gmail, Yahoo, Outlook).

How to Use It

You can get a free API key on RapidAPI:

👉 https://rapidapi.com/Hamza9777/api/disposable-email-detector11

Once you have your key, here's a simple example in JavaScript:

const checkEmail = async (email) => {
  const response = await fetch(
    `https://disposable-email-detector11.p.rapidapi.com/v1/check?email=${email}`,
    {
      headers: {
        'X-RapidAPI-Key': 'YOUR_API_KEY',
        'X-RapidAPI-Host': 'disposable-email-detector11.p.rapidapi.com'
      }
    }
  );
  const data = await response.json();
  return data;
};

checkEmail('t***@example.com').then(console.log);

Hey everyone, fake signups and spam accounts are a real problem for any web app. One of the simplest ways to fight them is to block disposable email addresses (like temp-mail, throwaway, etc.).

I built Disposable Email Detector - a fast, free API that checks if an email is disposable, temporary, or fake.

What It Does

• Checks email syntax and domain validity.
• Detects disposable/temp-mail email addresses.
• Uses a database of 160,000+ known disposable domains, updated daily.
• Also identifies free email providers (Gmail, Yahoo, Outlook).

How to Use It

You can get a free API key on RapidAPI:

https://rapidapi.com/Hamza9777/api/disposable-email-detector11

Once you have your key, here's a simple example in JavaScript:

const checkEmail = async (email) => {
  const response = await fetch(
    https://disposable-email-detector11.p.rapidapi.com/v1/check?email=${email}
    , {
      headers: {
        'X-RapidAPI-Key': 'YOUR_API_KEY',
        'X-RapidAPI-Host': 'disposable-email-detector11.p.rapidapi.com'
      }
    }
  );
  const data = await response.json();
  return data;
};

checkEmail('t***@example.com').then(console.log);

Note: Replace YOUR_API_KEY with your own key from RapidAPI.

Use Cases

• Signup forms (block fake accounts).
• Lead validation (keep your CRM clean).
• Anti-fraud systems.

Links

Feedback

Welcome

I'd love to hear your thoughts and suggestions. Feel free to leave a comment.

Thanks for reading!

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