Questions and discussion about AGL's Energy plans and your AGL Energy account
You might have to do this via AGL chat or phone, don't think they will just do this from a forum request, one with a different name and forum username.
And while contacting them to update address details, why not just get your bills sent via email ? (if not already signed up)
I think you should be able to do this by accessing your AGL online account . . . yes, just checked in your profile account settings you can select e-billing.