Why it matters
Static lists and segments both group contacts, but they behave differently. Choosing the right one helps teams avoid accidental audience changes, missed contacts, and confusing campaign or sequence results.
Key Concepts
Static list: A fixed contact audience that changes only when contacts are added, removed, or imported.
Segment: A dynamic contact audience based on saved filter rules.
Fixed audience: An audience that should stay the same unless a user intentionally changes it.
Dynamic audience: An audience that should update automatically as contact data changes.
Filter rules: The conditions that decide whether a contact belongs in a segment.
Step-by-Step: Choose between a static list and a segment
Use a static list when the audience comes from an import or should remain fixed.
Use a segment when the audience should update automatically from contact fields, tags, lists, communication preferences, or object data.
Use a static list for one-time sends, event groups, uploaded leads, or fixed customer batches.
Use a segment for recurring campaigns, live operational audiences, opt-in or opt-out filtering, or audiences based on changing statuses.
Review whether contacts should enter or leave the audience without manual action.
Choose static list if the answer is no.
Choose segment if the answer is yes.
Tips and Best Practices
Use static lists for imported audiences that need a stable record of who was included.
Use segments when membership should follow the latest data.
Name lists with source and date so users understand where the audience came from.
Name segments by rule intent so users understand why contacts are included.
Troubleshooting
Issue | Possible Cause | Fix |
A contact joined an audience unexpectedly | The audience is a segment and the contact now matches the rules | Review the segment rules or use a static list for fixed membership |
A newly added contact did not join an audience | The audience is a static list | Add the contact manually or use a segment instead |
A campaign audience changed between review and send | The campaign used a dynamic segment | Review segment membership before sending or use a static list when the audience must not change |