MSN is a web portal that is a related collection of internet service and apps for windows and mobile devices. It was initially designed as subscription based dial up online service that later become Internet service provider. It is a web browser which is a default home page for internet explorer. You can also create an account on MSN which allows you to exchange emails in which sending and receiving mails has become an easy procedure to proceed with. http://www.ebiztown.com/ms-butterfly-customer-service