Do you have to have the same email account address on all apple products or does it recognize all iCloud addresses. I have an iPhone ,IPAD and now a MacBook pro and am not sure how they talk to one another. Forgive me I an old and grey, but my IPAD has two iCloud addresses but also gmail as does mt phone but I seem to have set up the iCloud address on my Mac differently. HELP. HOW DO I GET IT RIGHT.