You don't send an email to a phone. You email a person at there email address. If their phone is set up for it, they can check their email from their phone.They sometimes have to pay extra for this service, as it is basically, internet access on the phone.
When i had sprint i was given an e-mail address from sprintpcs.com mine use to contain part of my name then@sprintpcs.com . if u cant find out another way to get it then use ur phone to e-mail your e-mail address and then when you check your mail it will tell you the e-mail address. if you still cant get it then comment me.