You do realise that you can change your email in the Account Settings yes? I believe it will then send any emails from SWC to that email address instead of the one you used to register with.
There's no way to delete your account, if that's what you're asking, so a full restart isn't possible. If you want to change your e-mail address, Aubec explained where you can do that, and if you want to change your character you would need to be killed in-game (asking a faction if you can join and let them execute you--probably the government of whatever planet you're on--is likely the easiest way) but then you've got a three-week death wait before you can recreate.