DVD-by-mail is a business model in which customers order DVDs and similar discs containing films, television shows, video games, and other media to rent, which are then delivery to the customer by mail. Generally, all interaction between the renter and the rental company takes place through the company's website, using an e-commerce model. Typically, a customer chooses from a list of titles online and adds titles to a queue. As a customer's requested titles become available, the company sends them out. When the customer is finished with the disc, they mail it back to the company.