Privacy Policy

Last updated: 2025-09-09

Who We Are

This Privacy Policy describes how One More Letter (“we,” “us,” “our”) collects, uses, and protects your information when you use our Service.

One More Letter is operated by Zettlify LLC, registered in Singapore.

1. Introduction

We are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our AI-powered emotional letter generation and delivery service.

By using our Service, you agree to the collection and use of information in accordance with this Privacy Policy.

2. Information We Collect

2.1 Personal Information

We may collect the following personal information:

  • Email address (for authentication and letter delivery)
  • Names of letter senders and recipients
  • Relationship details and personal memories
  • Emotional context and personal messages
  • Language preferences

2.2 Technical Information

We automatically collect certain technical information:

  • IP address and device information
  • Browser type and version
  • Usage patterns and service interactions
  • Log files and error reports

Users are responsible for complying with applicable laws regarding the collection, sharing, or content of information they provide.

3. How We Use Your Information

We use your information for the following purposes:

  • Generate personalized AI letters based on your input
  • Authenticate your identity and manage your account
  • Deliver letters via email to specified recipients
  • Improve our AI models and service quality
  • Provide customer support and respond to inquiries
  • Monitor and analyze usage patterns for service optimization
  • Comply with legal obligations and prevent misuse
  • Fulfill applicable tax and billing obligations

4. AI Processing and Data Usage

Your personal information and memories are processed by our AI system (Azure OpenAI GPT-4.1) to generate authentic, personalized letters in secure environments with appropriate safeguards.

AI-generated letters are for personal use only and do not constitute professional therapy, counseling, or medical advice. Personal information is not used to train AI models outside of letter generation.

5. Data Sharing and Disclosure

We do not sell, trade, or otherwise transfer your personal information to third parties, except:

  • To trusted service providers who assist in operating our service (Supabase, Resend, Azure, Paddle)
  • When required by law or to protect our rights and safety
  • In connection with a business transfer or acquisition
  • With your explicit consent

All service providers are contractually bound to protect your information and use it only for the specified purposes.

6. Data Security

We implement appropriate technical and organizational security measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction.

  • Encryption of data in transit and at rest
  • Row-level security in our database
  • Secure authentication protocols
  • Regular security audits and updates
  • Access controls and monitoring

7. Data Retention

We retain your personal information only as long as necessary to provide our services and fulfill the purposes outlined in this Privacy Policy. Letter content and associated data are stored securely and may be retained for service improvement purposes.

You may request deletion of your data at any time, subject to legal retention requirements.

8. Your Rights

Depending on your location, you may have the right to access, correct, delete, or restrict the processing of your personal information. You may also withdraw consent and request data portability.

To exercise these rights, please contact us at [email protected].

9. Cookies and Tracking

We use essential cookies and similar technologies to provide and improve our service. These include:

  • Authentication cookies to maintain your session
  • Preference cookies to remember your language settings
  • Analytics cookies to understand service usage

You can control cookie preferences through your browser settings.

10. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. We ensure appropriate safeguards are in place to protect your information during such transfers.

11. Children's Privacy

Our Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you become aware that a child has provided us with personal information, please contact us immediately.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated “Last updated” date.

We encourage you to review this Privacy Policy periodically for any updates.

13. Contact Us

If you have any questions about this Privacy Policy or our data practices, please contact us at [email protected].

14. User Account Responsibility

Users are solely responsible for their accounts, login credentials, and all activity under their accounts. Do not share your password and notify us immediately if you suspect unauthorized access.

Privacy Policy | One More Letter