Exchange server and iPhone and Push
I don't really understand push technology. Could someone help me? Do I have to have or be on an exchange server in order to use the iPhone for email? I am interested in purchasing a 3G iPhone but only use webmail presently. I would like to keep my calendar and email synced and do have a dotMac account so I think that will work. I just don't understand how Push works and am wondering if I will even be able to use it without being on an exchange server.