At LetterFlow, we believe privacy is a fundamental right, especially when it comes to your reading habits. This Privacy Policy explains how we collect, use, and protect your information.

1. Information We Collect

We collect information to provide you with a focused reading experience. This includes:

Account Information: Your name and email address when you sign up.
Email Data (via Google API): We access your email headers (sender, subject, date) and email bodies strictly to identify, extract, and display newsletter content.
Usage Data: Anonymous metrics on how features are used (e.g., "how many users used Dark Mode") to improve the app.

2. How We Use Your Information

We use your data for one purpose: to build your reading library.

To categorize incoming emails as "Newsletters" or "Promotions".
To display email content in our clean, distraction-free reader format.
To sync your reading progress (read/unread status) back to your email provider if you choose.

3. Google API Services & Limited Use Policy

Google Compliance Disclosure:
LetterFlow's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Specifically:

No Advertising: We do not use Google Workspace data to serve you advertisements.
No Humans Reading Emails: No human at LetterFlow reads your emails. Exceptions are only made with your explicit consent for support purposes, or if required by law.
No Generalized AI Training: We do not use your personal email content to train generalized AI or ML models.

4. Data Sharing and Disclosure

We do not sell your personal data. We only share data with third-party service providers (like our cloud hosting provider) strictly necessary to run the application, and they are bound by confidentiality agreements.

5. Data Retention and Deletion

We retain your data only as long as your account is active. You have the right to delete your account at any time. Upon deletion, all your personal data and synced content is permanently removed from our servers immediately.

You can request data deletion by emailing privacy@letterflow.app or using the "Delete Account" option in your settings.

6. Security

We implement industry-standard security measures, including encryption in transit (TLS/SSL) and at rest. We undergo regular security assessments to ensure your data remains safe.

7. Children's Privacy

LetterFlow is not intended for use by children under the age of 13. We do not knowingly collect personal information from children.

8. Changes to This Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at:

Email: privacy@letterflow.app