An auto dialer, autodialer, or autodialler is an electronic device or software that automatically dials telephone numbers. Once the call has been answered, the autodialer either plays a recorded message or connects the call to a live person.


When an autodialer plays a pre-recorded message, it's often called "voice broadcasting", or "robocalling". Some voice broadcasting messages ask the person who answers to press a button on their phone keypad, such as in opinion polls in which recipients are asked to press one digit if they support one side of an issue, or another digit if they support the other side. This type of call is often called "outbound interactive voice response".