Any notification amounts to an interruption: it is meant to grab our attention and direct it to the notification. When the message is irrelevant to us, the interruption is irritating. Some people like to keep their inbox at zero unread messages, others like their phone’s lock screen clear of notifications. If you’re in the latter group, swiping away irrelevant notifications feels particularly time-consuming and bothersome.
Sending users notifications for every little thing that happens in your app is a big mistake. You don’t want to be the app that causes your users to roll their eyes any time a notification pops up on their screen. Nor should you justify this behavior by saying ‘Well, they can turn them off in settings.’ Instead,
provide relevant content aimed to inform and engage.