In order to change the AT&T email settings, you will have to follow the steps that have been mentioned below. Make sure that you follow them properly. For that, click on File. Then click on Account Settings. After that, choose your AT & T email account and select Change to change AT&T Email Server Settings. Then confirm the settings. And also make sure that you check or enter your user name and enter your secure mail key. Then click on Finish to complete the process. You can also go to the official website and ask for help if needed.
