Sublytics
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Privacy Policy

Last updated: March 10, 2026

1. Who We Are

Sublytics ("we", "our", "us") is a newsletter analytics platform for Substack creators, operated by an individual founder. Our website is sublytics.org. Contact: hello@sublytics.org

2. What Data We Collect

Account data: When you sign up we collect your name and email address via Clerk (our authentication provider).

Newsletter data: When you upload a Substack export, we process subscriber emails, subscription dates, subscription types, and open rates. This data is processed in your browser and temporarily stored in your browser's local storage. We do not store your subscriber data on our servers.

Payment data: Payments are processed by Lemon Squeezy. We do not store your credit card information. We only receive confirmation of your subscription status.

Usage data: We may collect anonymous usage data such as pages visited and features used to improve the product.

3. How We Use Your Data

  • To provide and improve Sublytics
  • To send transactional emails (account confirmation, receipts)
  • To respond to your support requests
  • We never sell your data to third parties
  • We never share your subscriber data with anyone

4. Data Storage & Security

  • Account data is stored securely by Clerk
  • Your newsletter/subscriber data never leaves your browser
  • We use HTTPS encryption on all pages
  • Payment data is handled by Lemon Squeezy (PCI compliant)

5. Your Rights (GDPR)

If you are in the EU/EEA you have the right to:

  • Access your personal data
  • Delete your account and data
  • Export your data
  • Object to processing

To exercise these rights email: hello@sublytics.org

6. Cookies

We use essential cookies for authentication. We do not use tracking or advertising cookies.

7. Third Party Services

  • Clerk (authentication): clerk.com
  • Lemon Squeezy (payments): lemonsqueezy.com
  • Vercel (hosting): vercel.com
  • Resend (email): resend.com

8. Children's Privacy

Sublytics is not intended for users under 18 years of age.

9. Changes to This Policy

We may update this policy. We will notify you by email for significant changes.

10. Contact

hello@sublytics.org