# Dynamic Segments — Plunk

Real-time audience segmentation based on contact data and behavior.

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## What are segments?

Segments are dynamic groups of contacts that update automatically as contact data changes. Target campaigns and workflows to exactly the right audience without manual list management.

## Capabilities

- **Attribute-based**: Filter by any contact property
- **Behavior-based**: Segment by email opens, clicks, and engagement
- **Real-time**: Segments update instantly as contact data changes
- **Combinable**: AND/OR logic for complex targeting
- **Unlimited contacts**: No per-segment contact limits

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