You can change your email address from the My Account page.
To access your account settings, click the profile icon in the top right of the control panel. In the icon’s drop-down menu, click My Account. In the Sign-in method section, click Change. From the drop-down menu, click Update email address.
Enter your new email address into Enter new email address field. Then enter your current password into Confirm password field to confirm the change. Click Update to submit the change.
A confirmation is sent to your new email address to confirm the change. The change does not take effect until you click the link in the confirmation email.