So when I check and delete email on my Mac with OS Lion, it automatically deletes the same email on my iPhone and my 2nd Mac that also has OS Lion. On my 3rd Mac, which is a PowerMac G5 with OS Leopard 10.5, this email system does not update. It's like they don't even talk to each other. Is this as a result of the iCloud? I think it used to work with Snow Leopard, too. Anyway I can make it communicate with the Leopard OS?