Privacy Policy for Courier

Effective date: November 2, 2026

Courier ("the App," "we," "us") is an email client application. This Privacy Policy explains what information the App accesses, how it is used and stored, and your choices regarding that information.

1. Information We Access

Courier connects to your Google Account using Google Sign-In and the Gmail API so that it can display and manage your email. To do this, Courier requests the following Gmail API scopes:

Read — view the content of your email messages and metadata (such as sender, subject, and labels).
Send — send email messages on your behalf, only when you compose and send a message in the App.
Modify — organize your mail, such as applying labels, marking messages read/unread, or archiving, only in response to your actions in the App.

Courier does not request or use any Google Account data beyond what is necessary to provide its email client functionality.

2. How Your Data Is Stored

Local-only storage

All Gmail data retrieved by Courier is cached in a local SQLite database stored on your own device. This local cache exists solely so the App can function quickly offline and avoid re-fetching data unnecessarily. We do not operate a server that stores, syncs, or has access to this data — it never leaves your device as part of normal operation.

3. No Data Mining, No AI Processing of Your Email Content

We do not mine, sell, rent, or share the contents of your email with any third party. We do not transmit your email content to any cloud or third-party AI/LLM service for processing, analysis, or model training.

Courier performs one automated feature on your data: email categorization. This runs entirely locally on your device. No email content is sent to an external server or AI service to perform this categorization.

4. Diagnostic / Troubleshooting Data

Courier can generate local diagnostic information (e.g. logs or app state) to help troubleshoot problems. This diagnostic data is:

Stored locally on your device by default, like the rest of the app's data.
Never sent automatically. It is only transmitted to us if you explicitly choose to send it — for example, when reporting a bug.

5. Data Sharing

We do not sell your data. We do not share your Google Account data or email content with advertisers, data brokers, or any other third party. The only data we ever receive from you is diagnostic information you choose to send us for troubleshooting purposes, as described above.

6. Google API Services User Data Policy

Courier's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

7. Your Controls

You can revoke Courier's access to your Google Account at any time via Google Account Permissions.
Uninstalling the App, or clearing its local data, deletes the local SQLite cache and all locally stored diagnostic data from your device.

8. Children's Privacy

Courier is not directed to children under 13, and we do not knowingly collect information from children under 13.

9. Changes to This Policy

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

10. Contact Us

If you have questions about this Privacy Policy, contact us at mark@schema2ai.com.