greenpreferenceservice.com is the UK's only service allowing you to tell companies to send you emails instead of printed and posted mail. As well as reducing the use of natural resources, it also allows the reduction in transport and fuel pollution within the environment. GPS instructs most major companies that you would prefer them to send you emails instead of physical items of mail. These companies will therefore only send emails where they were going to send a physical mail item, therefore every email received has stopped the printing and posting of a physical mail item