> For the complete documentation index, see [llms.txt](https://academy.gopersonal.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://academy.gopersonal.ai/en/admin-ui/segmentation/audiences/customer-properties-rules.md).

# Customer Properties Rules

Customer-specific properties. Depending on the property type, various conditions can be created. For example, customers subscribed to email newsletters or customers whose birthdays fall in September.