# CampaignVoicemail

> The CampaignVoicemail object.

| Field | Type | Description |
|---|---|---|
| `behaviour` | one of `hang_up`, `leave_message` or null | What a call does when an answering machine picks up. `hang_up` unless you say. |
| `message` | string or null | What to say onto the machine, with the agent's `{{placeholders}}`. Needed for `leave_message`. |
| `retry_after_message` | boolean or null | Keep trying for a person after leaving a message. False unless you say. |