Changing the password of your ATT email account is definitely a good habit and should be done on a regular basis. So, if you want to know how to change ATT Email password, then you should first login to your ATT email account and go to the settings to change your password. Else, you can reset your password to change it. For this, tap on the “forgot password?” option, then complete the password reset instructions, and create a new password for your account. As soon as you create a new password, it will be changed for your account everywhere.