Push notifications can be categorized into three classes; web push notifications, desktop push notifications, and mobile push notifications.

Web push notifications

Web push notifications are located on the right side of the desktop screen, either at the top or bottom. In a mobile device, notifications appear in a queue format in the notification section. Users receive web push notifications when their device’s browser is open irrespective of the current open websites.
Push notification marketing can be used effectively to retain your users and bring repeat traffic to your site.

Desktop push notifications

Desktop push notifications are specific to the user’s desktop and are pushed by the applications and software installed on your desktop. These types of notifications are relatively difficult to build. 

Mobile app push notifications

Mobile App push notifications are triggered by the applications downloaded/installed on your mobile devices. These notifications are developed for the user’s re-engagement. Mobile app push notifications play a crucial role for app owners as new product updates or announcements are communicated via this type of notification.