Click on 'New Arrival Notification' under the 'List' heading in the Control Panel menu. In the 'Settings' tab, change 'Enable Sign Up' to 'Yes.' Then, select how often, which day, and what time the emails should be sent.
Next, click on the 'Advanced' tab. You can choose whether to automatically add new users to the email list and if you'd like to include an "other" field.
If you use Google Analytics, this is also where you can find the Google UTM Code.
Finally, click on the 'Email Template' tab. Write in the email address you would like the notifications to be from. Then, edit the email subject, intro, closing, and footer. When you are finished, click 'Save.'