email through Yahoo

I am so fustrated. I put the Yahoo app on my phone to look at my emails. Now I have all this stupid ads on the Yahoo app which is one reason I cancelled my account with Yahoo.   Now, you want me to pay xfinity for service including email but access Yahoo for my emails. In order to get ad free that wanna charge me a monthly or annual fee. So you want me to pay twice for your email service. I think this is a good reason to go shopping.