Open Settings App -> Notifications - Manage Notifications.
Tap on your App and select all cases.
B. Turn on notification settings in MailTime:
Open Security App -> Permissions -> Auto Start Management. Add/Enable your app as auto start apps
1. Click settings button and goes to the setting page
2. Click the account you want to change in the setting page
3. Choose the notification settings you want:
important will only notify you when important emails come.