In Inspector, navigate to the project you want to activate email notifications.
Click Settings → Notifications Channels
Email channel is activated by default when you create a new application so you'll find the channel in the "Active Channels" list.
Click Configure in the E-Mail channel to open the configuration screen
You can simply add as many E-mail addresses you want to receive selected notifications. Separate each email address with a comma ( , ).
Remember to click "Save" after any change in the channel settings.
If you want to disable the channel click "Disconnect" and confirm your choise.