Comcast provides the free Xfinity email service along with internet subscription. Even if you stop using the internet service, you can use the email account. You can also use your Xfinity email account on any third-party email client. At times, you may face problems like email delivery failure, authentication failure, server connection failure, spam attack, and many more. Here, we will be discussing a few Xfinity email problems and the solutions to fix them.