Segment vs list
In Klaviyo, a list is static: it holds the profiles that subscribed to it and only grows with new subscriptions. A segment is dynamic: it groups the profiles that meet a set of conditions, and grows or shrinks as their behavior changes.
How it is computed, where to read it
A list grows the audience: signup forms feed it, and it is the audience you keep in touch with through campaigns and flows.
A segment targets: sending a campaign to recent customers rather than the whole list, or triggering a flow when a profile meets a condition. Klaviyo updates it in real time.
KlaviBoard's Audience tab tracks signups and departures list by list, since that is where the audience is recruited.
Definition checked on September 15, 2026 in Klaviyo, Understanding the difference between segments and lists.