Privacy, plainly.

Letterboxx is built to organize newsletters without collecting more data than we need. This page explains how the app and website handle information.

For Google sign-in and account access details, see the Google user data and protection section below.

What we collect

• Website usage information may be measured with privacy-friendly analytics.
• The app may process email content and account metadata only for accounts you connect.
• Message data can be stored locally on your Mac so you can read, organize, and search it in the app.
• We do not sell personal data or use ad-tracking networks on the site.

How we use data

We use data only to provide, secure, and improve Letterboxx, including rendering newsletters, syncing connected accounts, and supporting features you choose to use.

Google user data and protection

Letterboxx accesses Google user data only after you explicitly sign in with Google and grant permission. We use that access only for the app’s newsletter-reading and organization features:

• Import newsletters and display message content.
• Organize messages, apply user actions, and support highlights, reminders, and privacy-focused reader controls.
• Process newsletter content primarily on the user’s device with local filtering and rendering that reduces scripts, trackers, embeds, autoplay media, and similar clutter.
• Store derived privacy-analysis data and related classifier data locally on the device as rebuildable local state.
• Do not sell Google user data, use it for advertising, or use it for unrelated profiling or data brokering.
• Transmit Google user data over industry-standard encrypted connections and store authentication tokens with platform security mechanisms.
• Limit access to the functionality required for Letterboxx to operate.
• Allow users to revoke Google access through their Google Account permissions and remove their account from Letterboxx at any time.

Your choices

You can disconnect accounts through the app or revoke access at your email provider. You control what stays on your device and what you remove.

Contact

Questions about privacy can be sent to support@letterboxxsoftware.com.