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Terms of Service

Last Updated: July 9, 2025

1. Acceptance of Terms

By accessing or using UserCheck services ("Services"), you agree to these Terms. If you do not agree, do not use the Services.

Age Requirement: You must be at least 16 years old (or the age of consent in your jurisdiction) to use our Services.

2. Service Description

UserCheck provides an API to identify temporary or disposable email addresses. Our service validates email addresses against our database of disposable domains.

3. Service Plans

We offer three plans:

  1. Free Plan: Limited daily requests, no registration required
  2. Registered Free Plan: Higher monthly limits with registration
  3. Pro Plan: Paid subscription with increased limits

Current pricing and limits are available at usercheck.com.

4. Registration and API Keys

5. Acceptable Use

You may not use our Services:

6. API Usage and Rate Limiting

We enforce rate limits to ensure fair usage. Exceeding limits may result in temporary or permanent suspension.

7. Payments

Payment Processing

We use Paddle.com Market Limited ("Paddle") as our merchant of record. When you buy a paid plan, your contract for the transaction is with Paddle and you agree to Paddle's Checkout Buyer Terms.

Payment Terms

8. Security and Service Availability

Data is encrypted in transit via TLS 1.3 and encrypted at rest by our database provider, PlanetScale (SOC 2 Type 2). See our security page for details.

Standard plans. The Service is provided “as-is,” with no guaranteed uptime. We work hard for high availability but do not commit to a specific percentage under these Terms.

Enterprise plans. If you have executed an Enterprise or custom agreement with UserCheck, any separate Service Level Agreement (SLA) contained in that contract will apply instead of the paragraph above.

9. Data Processing

When you submit personal data through our API, you act as the Data Controller and we act as your Data Processor. This relationship is governed by our Data Processing Agreement.

Your obligations:

10. Intellectual Property

All UserCheck content and software is our property and protected by copyright laws.

11. Limitation of Liability

Our total liability is limited to the fees you paid in the last 12 months. We are not liable for indirect, incidental, or consequential damages.

12. Data Resale and Redistribution

You may not resell, sublicense, share, or redistribute UserCheck data or API results to third parties without our written agreement. This includes incorporating our data into products or services used by others.

13. Data Breach Notification

See Data Processing Agreement Section 6 for our breach notification obligations.

14. Changes to Terms

We may update these Terms at any time by publishing the revised version at usercheck.com/legal/terms. The updated Terms become effective immediately for new users and upon posting for existing users. If you continue using the Service after the update, you accept the new Terms.

For Enterprise customers with a separate written agreement, any change to these public Terms does not modify your signed contract unless expressly stated.

If you do not agree with the updated Terms, your sole remedy is to stop using the Service and cancel your account.

15. Termination

We may suspend or terminate your access for Terms violations or at our discretion.

16. Governing Law

These Terms are governed by Singapore law. Singapore courts have exclusive jurisdiction over any disputes.

17. Contact

Questions? Email us at [email protected]