What Are Push Notifications? How the Pop-up Alerts Work

Push notifications are the alerts that apps send to your phone or computer even when the apps aren't open.

What is a Push Notification and Why Do They Matter?

A Comprehensive Guide to Notification Design

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Push notification guide for marketers — what they are, design tips

Stay up to date everywhere you go - Apple Support

18 Inspiring Location-based Push Notifications - Taplytics

Notification Popup PushNinja by 500apps

9 Types of Popup Notifications and How to Make the Most of Them

What is a Popup Notification? Slider, Modal, Embedded