Click on Add Content
Click on Add Content and decide between a basic page and an article.
Copy and Paste Block of Code
Change the Text Format to Full HTML. Copy and paste the code snippet below and click Save
Note: If your Plugin isn't rendering correctly, try unchecking the "Correct faulty and chopped off HTML" setting in your Drupal configuration.
Go to your Drupal site to edit your Mailing List
You can now customize POWr Mailing List by visiting your live Drupal website. Just click on the Settings Icon to launch the POWr Editor. Change anything you want, from design to contents, in the visual POWr Editor.