You have two ways you can easily change the email associated with your ReadCube Account

1) Through the ReadCube desktop

Choose "Account" and update your email. Don't forget to click "Update my Account"

2) You can also change your email by updating your email through Go to (or just click your name/sign-in in the top right corner).

Click "Edit" and update your email. You will need to verify your new email - so don't forget to check your email to ensure the change is confirmed.