Users can change their email addresses at any time. To change your email address, click your username on the global bar.
Then, click “My Profile” from the drop-down menu. This will open up your Nulab account in another window.
Click on the Email tab.
Enter your new email address and click Send Verification Email. You will receive an email with instructions on how to verify your new email from <firstname.lastname@example.org>.
Information on changing your preferred email address on Cacoo versions before 6/27/18: https://support.cacoo.com/hc/en-us/articles/207212977-Changing-the-email-address-of-your-Cacoo-account