Voicemail Detection

When your Clerk Chat Voice AI agent makes an outbound call, it can automatically detect when the call goes to voicemail, and your message will still get delivered.

Written By Jill Berkowitz

Last updated 3 months ago

Why voicemail detection matters

This is exactly how humans operate, and your AI agent should do the same.

Voicemail detection ensures that every outbound call attempt ends with meaningful, familiar, and natural engagement, even when customers can’t answer.

  • Saves time: Your agents don’t wait through rings or manually hang up.

  • Consistent communication: Every customer gets the same professional voicemail message.

  • Automation-ready: Combine with SMS or RCS follow-ups for a complete outreach workflow.

How voicemail detection works

  • If a customer doesn’t pick up, the AI agent will recognize the voicemail tone.

  • The AI then plays your configured voicemail message.

  • After the message is complete, the call automatically ends.

Setup and configuration

Voicemail detection is available as a tool in the Agents section and must be connected to a voice node.

Note: If you’re interested in enabling or need assistance setting up voicemail detection, please contact sales@clerk.chat.