How do I manage my message notifications?

If you're getting too many notifications, manage your preferences as below:
1. Turn off notifications in settings: go to Settings > Notifications > App settings, select the app whose that you want to manage notifications for.
2. Quickly turn off notifications from the notification bar: swipe down the status bar on the notification page, long-press the notification content and click on Turn off notification. On the new page, select the notifications you want to turn off and click Done to finish.