Sometimes the simple issue might show up and might seem like a big problem but by applying simple techniques you can easily solve them. If you are facing issues like Comcast email app not working then try these solutions. First of all, check out the internet connection if it is well connected or not. Then check the servers or any Comcast device you have if it's functioning properly. Lastly, you need to check the app and try to clear the cache so as to reset the app and then try logging in again.