Advanced Popup Tutorial
In this tutorial I will show you how to design a custom popup with an opt-in form inside. the live demo of this tutorial is here: http://www.wpsubscribers.com/demo/category-4/advanced-custom-popup-design.html.
As you can see on the demo page, there’s a popup with an opt-in form inside, so we need to do 2 things: create a custom popup and then put in the custom opt-in form: