You can change your email address from the account settings 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 Manage Account to go to your My Account page. In the Sign-in method section, click Change. This opens a drop-down menu with three options: Change email, Use Google, and Use GitHub.
Click Change email. This opens two text fields for a new email address and a password confirmation. Fill in both fields and then click Submit 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.