In order to email alerts for system logs, the steps below have to be followed:
Email Server Profile
Go to Device > Server Profile > Email, click Add and fill the required fields (as per the example below):
Log Setting - System Logs
Go to Devices > Log Setting > System.
For more information about configuring Email alerts, which includes a way to test the email and configure system logs based on severity, please see:
How to Configure Email Alerts