Daily 7:00 AM scan of every member, split into never-linked-the-app and linked-both, checked against 4 alert conditions and batched into one alert.
This is the early-warning system for churn: it spots members going quiet before they leave, across both people who never linked the app and people who did but stopped showing up.
The detection logic is done and running daily against real data. The only thing standing between this and being useful is the last wire: pointing Send Alerts at the real TWU endpoint instead of the test inbox it's aimed at today.