You can set:
      - If coupon code must be generated or the same all the time
      - How many times customer can use this coupon code
      - How many days coupon code will be valid
      - How many characters coupon code will have
      - Which one discount will be use as base to newsletter discount
      - Add your own welcome message, message below submit button and thank you message.
      - Customize email templates.
      - Show popup immediately.
      - Option to set cookies name.
      - Set a timer delay and trigger popup based on time on page.

This plugin is easy to install. Help manual is included in the download file. Responsive pop up window - compatible with portable devices (iPhone, iPad, Android).