From the home screen of your account, select the client you want to send a test email of an automation for.

Open the project (report or dashboard).

Select Automations from the Builder Menu on the right.

Click the Automations tab.

Select the automation you want to send a test email for.

Click Send Test Email at the bottom of the drop down window.

Enter the email address you want to send the test email to.

Click Send Email.