In order to change the email associated with your account, you will have to log in to your DealMaker account and click on the icon on the right-hand corner of your homepage as shown on the picture below and click on "Your Profile".
You will then need to click on the "Email" tab on the left-hand side as shown below. Please fill in the new email you would like your account to be registered in the box that contains your old email address. 
Your account will now be associated with the new email