To turn off notifications from your activity feed:
- Click on your profile icon on the bottom left-hand corner
- Select "My account"
- Scroll down to the 'Notifications' heading
- Uncheck the option to 'Enable email notifications for comments' to turn off comment notifications
To turn off notifications on a specific project:
- From your prototype's project view, click the settings icon in the top right corner
- Scroll down to the 'Notifications' heading
- Toggle on 'Unsubscribe from notifications on this project'