Yes you can change your e-mail address from your Beezer account.
In order to change the email address, you will need to login with your registered e-mail address.
Go to Beezer Dashboard and on the right click on Account Settings
An email will be sent to your old email's inbox notifying you that you have changed the email. If you didn’t ask to change your email, there will be a link in the email to reset your sign-in email.