Content marketing can be used not only for attracting new customers but also for increasing product engagement and reducing customer churn. Here are four actionable ways to use content to keep existing customers engaged: 1) Use blog posts to educate customers about important features, 2) Publish industry studies to keep users coming back, 3) Create data-driven articles that highlight your unique data or analysis, and 4) Include clear benefits in product announcements and feature updates. These strategies can help increase loyalty and encourage disengaged users to log in and start using the tool again.