I think forward is the only option. But you can always try it and see what happens.
I do not recommend using the carrier addresses however. You are opening yourself up for SPAM as they are unfiltered and since you don't own them you can't take them with you when you change carriers and they are subject to change at any time. Plus you can only view email to hose account on the BB, so in case of a BB outage you are out of luck.