youve got mail

I love it and its amazing to think that some people we talk to online we could actually walk past on the street and not even know haha

Basically, can I change my settings somehow, so someone else's voice greets me and says "You've Got Mail", instead of the default? I seem to recall my sister at one point having several different greetings on her account. Maybe this is a thing of the past?

Is there a way I could get the "You've got mail" tone for SMS onto my iphone?