Lists vs Segments: Static vs Dynamic Audiences
The Lists & Segments system in EVA allows you to organize profiles into targetable audience groups. While both lists and segments are used to group contacts, they are built using different logic and behave differently over time.
Understanding the distinction between these two audience types helps teams choose the correct structure when preparing campaign recipients or building automated targeting workflows.
What Is a List?
A list is a static collection of profiles.
Profiles are manually added to the list and remain part of that audience until they are removed. The membership of a list does not change automatically based on customer activity or profile updates.
Lists are useful when you want to maintain a fixed group of contacts.
Typical examples include:
- newsletter subscribers
- event attendees
- internal test recipients
- manually imported customer groups
Because lists are static, the number of members only changes when profiles are manually added or removed.
What Is a Segment?
A segment is a dynamic audience generated from rules.
Instead of manually selecting profiles, segments use conditions to automatically determine which profiles belong to the group.
For example, a segment might include profiles who:
- purchased within the last 30 days
- opened an email recently
- have not engaged with campaigns for a certain period
- meet a specific demographic condition
When profile data changes, the segment membership updates accordingly.
This makes segments useful for behavioral targeting and automated marketing workflows.
How Membership Changes Over Time
The main difference between lists and segments is how membership is updated.
Lists
Membership changes only when a user manually updates the list.
If a profile is added to the list, it stays there until someone removes it.
Segments
Membership changes automatically when profile data matches or stops matching the defined rules.
When a profile satisfies the conditions of the segment, it is added automatically. If the profile no longer meets the conditions, it is removed.
When to Use Lists vs Segments
Lists and segments serve different targeting strategies.
Lists are typically used when:
- the audience is manually curated
- the group should remain stable over time
- contacts come from imports or offline sources
Segments are typically used when:
- the audience should change dynamically
- targeting depends on customer behavior or attributes
- campaigns require automated audience updates
Using the correct audience type ensures that marketing targeting remains accurate and manageable as the audience database grows.