Userlist tracks user behavior using the user data, and the event data received. Also, Userlist automatically records additional events such as when users open a message, click a link, join a segment, etc. So, you do not have to worry about tracking this data yourself.

Before starting the integration, Some pre-requisites include determining what properties and events need to be tracked. Also, choose a naming convention to document these properties. For successful integration, a few best practices include using a framework for naming conventions, consistency with vocabulary and phrase structure, consistency between capitalization and characters between words, and some more.