Privacy Policy
Last updated: December 7, 2025
1. Introduction
Welcome to lttr.io ("we," "our," or "us"). We are committed to protecting your privacy and ensuring the security of your personal information. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our platform.
2. Information We Collect
2.1 Information You Provide
- Account information (email address, password)
- Profile information (newsletter name, Substack URL, bio, niche categories)
- Subscriber count and newsletter metrics
- Communications with other users through our platform
- Swap request details and history
2.2 Information Collected Automatically
- Device information (browser type, operating system)
- Usage data (pages visited, features used, time spent)
- IP address and approximate location
- Cookies and similar tracking technologies
2.3 Information from Third Parties
- Substack API data (for verification purposes)
- Payment information from Gumroad (subscription status only)
- Google account information (if using Google OAuth)
3. How We Use Your Information
- To provide and maintain our service
- To match you with compatible swap partners
- To verify your newsletter and subscriber count
- To process transactions and manage subscriptions
- To send you important updates and notifications
- To improve our platform and develop new features
- To prevent fraud and ensure platform security
- To comply with legal obligations
4. Information Sharing
We do not sell your personal information. We may share your information in the following circumstances:
- With other users: Your public profile information (newsletter name, niche, subscriber range, bio) is visible to other platform users
- Service providers: We use third-party services for hosting, analytics, and payment processing
- Legal requirements: When required by law or to protect our rights
- Business transfers: In connection with a merger, acquisition, or sale of assets
5. Data Security
We implement industry-standard security measures to protect your information, including encryption in transit and at rest, secure authentication, and regular security audits. However, no method of transmission over the Internet is 100% secure, and we cannot guarantee absolute security.
6. Your Rights
Depending on your location, you may have the following rights:
- Access and receive a copy of your personal data
- Correct inaccurate or incomplete information
- Delete your account and associated data
- Object to or restrict certain processing
- Data portability
- Withdraw consent at any time
To exercise these rights, please contact us at contact@lttr.io
7. Cookies
We use cookies and similar technologies to maintain your session, remember your preferences, and analyze platform usage. You can control cookies through your browser settings, but disabling them may affect platform functionality.
8. Data Retention
We retain your information for as long as your account is active or as needed to provide services. After account deletion, we may retain certain information for legal compliance, fraud prevention, or legitimate business purposes for up to 90 days.
9. Children's Privacy
Our service is not intended for children under 13 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately.
10. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes by email or through a notice on our platform. Your continued use of the service after changes constitutes acceptance of the updated policy.
11. Contact Us
If you have questions about this Privacy Policy or our data practices, please contact us at:
lttr.io
Email: contact@lttr.io