In Qlik Community, you can choose what methods of notifications you receive (email, pop-up, or mobile notifications) as well as choosing what activity you receive notifications for.
To update your community notification settings, click on your Username in the right corner of the global header to open your user menu, and select My Settings:
Navigate to My Settings > Subscriptions & Notifications > Notification Settings.
In the General Settings, select which types of notifications you would like to turn off, and choose the default behavior for your activity.
Once you have finished your selections, click Save.