RescueGroups.org offers voicemail only, not a telephone answering service. What does this mean to you? If your group wants telephone messages made available to a set of or to all volunteers, take a look at this service. This guide explains the service and may help you decide if it would be helpful to you.
Voicemail Service (Getting started with the Voicemail Service)
Getting Started with RescueGroups.org
Management App for Android guide
Email Hosting and Forwarding Service