When sending email blasts from your nation, you can choose from a dozen public themes. This allows you to create a beautiful email design without knowing any CSS or Liquid. If you'd like to edit the footer of your email, or other elements of the design, you can do so by copying a public theme and creating a new custom theme. Creating a custom theme allows you to edit your email template. In this video from NationBuilder Live, VP of Community Adriel Hampton walks you through the process of editing your email template: