# Recurly Engage Docs Documentation

> Documentation for Recurly Engage Docs

This file lists one part of the documentation. The full index is at https://docs.recurly.com/recurly-engage/llms.txt. The index for every project on this site is at https://docs.recurly.com/llms.txt.

## Directory: SEGMENTS
- [Overview: Segments](https://docs.recurly.com/recurly-engage/docs/segments.md): How to create and manage user segments in Recurly Engage for targeted prompt delivery.
  - [Complex Collections](https://docs.recurly.com/recurly-engage/docs/complex-collections.md): How complex collection traits, like subscriptions, differ from standard traits — with filtering examples and known behavior to watch for.
- [Churn propensity modeling](https://docs.recurly.com/recurly-engage/docs/churn-propensity-modeling.md): Churn propensity modeling is a machine learning feature in Recurly Engage that assigns each subscriber a real-time risk score from 1–10 to surface at-risk subscribers before they cancel.