See subscriber status in Klaviyo.

If you use Klaviyo to email your customers, every profile Subi syncs now carries more detail about that person's subscription.

Previously, a synced profile only reflected active subscribers accurately. A customer who had paused or cancelled looked no different from someone who had never subscribed at all, since the synced properties only counted active contracts. Each profile sync now also writes the customer's current subscription state (active, paused, cancelled, or none), how many subscriptions they currently have paused, when they first became a subscriber, and when their most recent subscription ended.

With this on the profile, you can build Klaviyo segments and flows around real subscription status instead of guessing from purchase history. That could mean a win-back flow aimed only at customers whose subscription recently ended, or a message reserved for subscribers who are currently paused rather than your entire subscriber list.

This data is included in every profile sync going forward, using the same connection you already have set up. There is nothing new to configure on your end.