I dont think its that easy, you can get emails sent to you forwarded as sms msgs.
But I think just sending email through your cellphone is the same as an sms message only you just call it an email.
Access yahoo email on your cellphone.
Not really sure b/c mine can do alot more than the average phone but your cellphone provider should tell you how to send and receive email on your model. I dont see much of a difference except in length of a sms and an email