Launch Custom Code Editor
Copy and paste the below script into the <Head> field. Scroll down and click Save.
Paste Script In <Head> Section
After opening any Article, Forum or Blog post, switch over to the HTML Editor. Copy and paste the code snippet into the editor, and then publish.
You Will See The POWr Mailing List Plugin
Start to edit the Mailing List Plugin:
Visit the live Ning website and click the Settings Icon in the top right corner of your Mailing List Plugin.