The email address of an existing IncaMail account cannot be changed. If you want to use a new email address, you must register a new account with that address.
If you want to keep access to messages sent to your old email address, we recommend keeping the old account.
If you do not need access to these messages, you can delete your account. You can do this under Settings > Delete account. You must confirm this action by entering your password and, if two-factor authentication is enabled, a verification code.
Please note that deleting an account is irreversible. After deletion, you will no longer have access to the IncaMail messages associated with the deleted account.