Frontier is forcing their customers to use Yahoo mail if you want to get your email on your phone. I'm not going to send email with free advertising for Yahoo at the bottom. And there is no way I want their ads scrolling across the bottom of the screen when I'm trying to read my email. We spent an hour on the phone with one of their 'techs' and he couldn't help us. The 'tech' insisted that we could use Microsoft Outlook (exchange) but couldn't tell us how. Then he tried to blame the phone for the problem. When I explained it was THREE phones not one. He didn't have anything to say.