Drop Cowboy can deliver to landlines that have a voicemail box provided by the traditional carriers and does not have an IVR system. For example, if the landline has a voicemail set up, our system will listen for the beep and play the recording. This is often the case with most residential contacts. However, if the landline has an IVR (Interactive Voice Response) system, we cannot bypass this. This is something that would occur more often with business landlines. Please note that you can expect a significantly lower response rate from landlines because of this.