Yes, Howl allows you to change your email in case you don't have access to the current one. By going into settings, you can change your email to whichever you want. But to be able to continue playing and getting the full experience you will have to verify it first.
To verify your email, once you change it and press save, a message will be sent to the new email and you need access to go and press the verify button from your email.
Once you do that, you will be ready to go!