What is IsFakeMail?
IsFakeMail offers a real-time disposable email detection service designed to protect your platform from fake accounts and spam. By checking email addresses or domains against a continuously updated database of thousands of disposable email domains, it helps maintain user quality and communication integrity.
The service includes a free REST API that delivers results in under 50 milliseconds, making it ideal for integration into sign-up forms, verification workflows, and backend systems. It blocks temporary email addresses commonly used to bypass email verification, ensuring higher quality registrations, reduced fraud, and improved email deliverability.
Features
- Free API Endpoint: A simple REST API that accepts email addresses or domain names to check for disposability without authentication.
- Lightning Fast Detection: Returns results in under 50 milliseconds, utilizing Cloudflare KV for optimized performance.
- Always Updated Database: Continuously monitors and updates the list of known disposable email domains to maintain high accuracy.
- Supports Email and Domain Checks: Accepts both full email addresses and domain names, automatically extracting the domain from emails.
Use Cases
- Block fake account registrations by detecting disposable emails during sign-up
- Prevent abuse of free trials and promotions using temporary email addresses
- Improve email deliverability by filtering out high-bounce disposable addresses
- Enhance user engagement metrics by ensuring only valid email users are counted
- Reduce customer support burden caused by fake or inaccessible accounts
FAQs
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What is a disposable email address?
A disposable email address is a temporary email account that expires after a short period — usually minutes to hours. They're commonly used to bypass email verification, access free trials, or avoid giving out a real address. -
How accurate is the detection?
Our database contains thousands of known disposable email domains and is continuously updated. We monitor new temporary email services and validate domain configurations to maintain high accuracy. -
Can I check email addresses or just domains?
Both. Our API accepts a full email address (user@domain.com) or just the domain (domain.com). When you provide an email, we automatically extract and check the domain part. -
Is the API free to use?
Yes — our API is completely free with no authentication required. You can make requests directly from your frontend or backend. We may introduce rate limits for excessive usage, but normal application usage is unrestricted. -
How often is the database updated?
Continuously. We monitor for new temporary email services, track domain changes, and remove inactive services. Updates typically happen multiple times per week.
