Convert Pro is a top selling Email Opt-In & Lead Generation Plugin for WordPress. Lots of useful functionality, such as Drag & Drop Editor - the all new revolutionary drag and drop editor makes it easy and fast to design high converting opt-in forms in minutes. 100% Mobile Friendly - to ensure your mobile pages won’t be punished by Google for intrusive interstitials, Convert Pro gives you full control.

Demo: https://www.convertpro.net/