Setup: 1. Install the extension 2. Add Gmail as an app. You can do so by following this guide: https://support.google.com/chrome_webstore/answer/3060053?hl=en - make sure to select the option "open as a window". 3. Open the newly installed app. Usage instructions (including custom settings): https://github.com/aberonni/gmail-app-badge-notification?tab=readme-ov-file#usage Troubleshooting: https://github.com/aberonni/gmail-app-badge-notification#Troubleshooting Reporting issues: https://github.com/aberonni/gmail-app-badge-notification/issues