Web push notifications is now a new strategy to grow your subscriber. Most of the popular website like Facebook, Twitter are also now using web push notification on their websites. As per the case study by YouNow it is revealed that user's retention has increased by 19%.
Recently, I have started using web push notification in my technology blog. And in this tutorial, I will guide you how to add web push notification your Blogger Blogspot. But before jumping to the whole process, let me tell you something about OneSignal.