### Answer Based on the available documentation, Retell AI provides voicemail and IVR detection capabilities that can help manage unwanted calls [(1) ]() . When voicemail is detected, you can configure your agent to either hang up immediately or leave a message . Similarly, IVR hangup functionality allows the system to detect if a call reaches an automated phone menu system and automatically disconnect . However, the documentation doesn't explicitly describe a dedicated spam or sales call filtering feature. The voicemail and IVR detection features run continuously within a timeout window during the first 3 minutes of a call [(1) ]() [(2) ]() . If you need more specific spam filtering capabilities beyond voicemail/IVR detection, I'd recommend checking out these resources or reaching out for guidance: - [Handle voicemail and IVR]() - Visit [Documentation]() - Visit [Hire certified Retell partner]() Would you like a general answer based on common spam handling approaches in conversational AI?

​ To learn more, see the sources I considered: [[1] Handle voicemail and IVR](https://docs.retellai.com/build/handle-voicemail) [[2] AI Voice Agents in 2026: Everything Businesses Need to Know | Retell AI](https://www.retellai.com/blog/ai-voice-agents-in-2026) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.