This Article will show you how to enable login notifications in Cpanel
Step 1. Log into Control Panel
Step 2. Click on the Arrow next to the username in the top right hand corner, Then click on Contact Information

Step 3. Alternatively You can also access Contact Information Under Preferences

Step 4. Enter the required Contact information

NB: Security alerts gets sent to PRIMARY Email address Only
Step 5. Select the Notification settings you require

NB : Security Notifications can not be disabled