Being able to effectively engage with your users through their mobile device is perhaps the most important skill you need to develop.
Mobile phones and other such devices have now eclipsed the number of users who use desktops to access the internet. Users can receive hundreds of emails that they will read as and when they get the time, if at all.
The beauty of the mobile phone is that it is always with your user. If it's not on them, it'll be very close to them. They may not be thinking about your site all the time but if you push the right notification at the right time then they will be.
A push notification to people at 730am advertising your latest coffee brands and grinds is a great example of choosing the right time to deliver your Push Notification to users who may well be on the train or bus to work and be thinking of that first coffee of the morning.
Using Push Notifications is an important way of having direct contact with your users and allow them to interact with you by the simple tap of the screen.
When designing your campaigns have the mobile user in mind when designing your notifications. Ensure your notification stands out.