CoinZoom doesn't support changing your email address as it is a key identifier for your account. However, you can create a new account with the desired email address and then transfer all of your funds over for free via ZoomMe.
We only allow a phone number to be tied to one account at a time, so you may need to update your profile on your old CoinZoom account to a different phone number so you can use the desired phone number on your new account. Our support team can help with this if needed.
Note: If you no longer have access to the email tied to your account and your CoinZoom account our support team may be able to help you regain access by verifying your identity. Please create a support ticket if you need help with this.