You can set up email alerts for submitted applications via Configuration. If you have configuration permissions, you'll find the Configuration page from the menu (by hovering over the gear icon in the top right corner). From there, navigate to General Shelter >> Application Builder. 

From there, choose the application for which you'd like to set up email alerts from the drop-down:

After you've selected the application type, you'll see a checkbox option for "Auto-email submitted applications". If you check this box, you can add email addresses that you would like to receive every submitted application of the selected type. Simply click "Add Email Address" and enter the email. After submitting an email, you can always go back and edit or delete that address. 

When an application of the type you have set up (e.g. dog adoption) is submitted, the saved email address will receive an email containing the responses of that application.