Inbox Narrator is a service that connects to your Gmail account and summarizes your new emails using AI technology. It then delivers these summaries to your voice assistant, such as Siri or Google Assistant, each morning. It is available for a subscription fee of $3.99 per month, and offers a money-back guarantee if you are not satisfied with the service. It is designed to work with Gmail, and can be used on any device that supports Siri or Google Assistant.