Web Push is an optional feature that allows websites to send you messages even when the site is not loaded. Click the menu button and select Settings. Click the menu button and select Options Preferences. In the Menu bar at the top of the screen, click Firefox and select Preferences. If your choices are grayed out, deselect the Use Default checkbox. You can choose whether or not to give permission for a specific website by following these instructions: If you already gave permission to a site to send notifications, the site will also be able to use the Push API. Sites can also use Push to update data in the background, even without showing you a notification. Using the Push API, a W3C standard, Firefox receives a push message and can show notifications (if permitted by the user) at any time.
4 What information do I share with a website?.
