use iMessage with iCloud email alias?
I set up iCloud with my old .mac / mobileMe account. So far no trouble.
But I've been using some email aliases that I use for actually emailing and kept the "core" email address (the iCloud log in) a "secret". (Just because I'm afraid of spam. An alias is easier changed than a whole Apple-ID with iCloud in the backseat now - in case I end up on a spammers-list).
Now when using iMessage I need to give out an email address (of course). I tried to use one of my iCloud addresses (aliases) but it won't accept those. Only the iCloud log-in Email address. Which I don't want to give to my friends or other people.
Is it supposed to ONLY work with your iCloud log in?