Create a conversion funnel in your wordpress. It allows for seamless tracking and categorization of users based on their conversion states, providing valuable insights to optimize marketing strategies and enhance overall user engagement.
You can create leads manually or automatically when register new users.
Users can travel through the conversion funnel by visiting different pages.
Referrer system ready with url param.
If you need to notify them, you can use WordPress emails.
Documentation
Full documentation and more info: growthplugins.com/plugin/funnel.