If for any reason, you need to change the email address associated with your account, you can do this easily from the "Profile" page.
To get there, log into your account, then from the drop down menu at the top right, select "your profile".
Scroll down on this page to "Account Settings"
Edit any information that needs updating and be sure to click "Save changes"
Please note: this will change the account information for your user account ONLY. If you need to change contact information for a vendor profile or market profile, please navigate to that profile to edit that information.