Cointree uses email addresses as the unique identifier for all accounts for security purposes.
Unfortunately, this does mean that we are not able to change email addresses for accounts, however, we do have a very quick account creation process and you will be able to create a new account for your new email address.
If you have any assets/holdings in your old account, please contact our Support team and we will be able to organise for your balances to be transferred to your new Cointree account.