Actually it is possible. You just have to send a ticket to toonslab with the reason about why you want to change your identify e-mail. Just did with my account and I had sucess.
How do you submit a ticket? I never have before -
Who closes the door when the bus driver gets out?
Is water wet?
What color is a mirror?
Can god make a rock so heavy he cant lift it?
Do you exist? How do you know?