Many companies are now choosing to email their customers information, advertising and account queries and bills. This is saving the business world millions of pounds every year in terms of postage and even admin time.
Some of these companies are passing some of the savings on to their customers, offering them discounts for receiving their bills via paperless means. This is a great way to attract customers to sign up for this service.
You should first carry out some research as to how your customers would feel if you starting communicating with them via emails rather than letters. If you decide to go down the email route you should always allow people to be able to receive information in another way e.g. in the post as not everyone has access to the internet. Some companies no charge customers to receive paper bills but offer a free service to view / print your bills online.