To opt out from our push notifications you can do it when you receive a notification you can right click on it to get the option to disable and with a single click you can disable the same.
You can also opt out using your browser settings:
1. For Chrome - Type chrome://settings/content/notifications and you will find an option to remove the notifications
2. For Firefox - You can go to options and then select Privacy & Security and go to notifications to remove the website notifications.
3. For Safari - Open Safari preferences and go to website > notifications and change the settings to Deny stopping receiving the push notifications.