> ## Documentation Index
> Fetch the complete documentation index at: https://otpedge.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Audience filtering

\---\ntitle: "Filtering Your Audience for Targeted Broadcasts"\ndescription: "Use custom attributes to filter your broadcast lists."\n---\n\nBefore sending a campaign, use the Filter builder. For example, set rules like: `City = New York` AND `Last Purchase < 30 days ago`. This ensures your marketing messages are highly relevant and minimizes the risk of being marked as spam.\n