I understand what Push email is...my question about MobileMe has to do with how fast your iPhone email will sync with your desktop mail after messages are read/replied to on the desktop computer. For example -- If I have my iPhone next to my MacBook Pro and I'm using Mobile Me for email. An email comes in to the server and gets pushed to my iPhone immediately (and Mail.app too, I think). Now say I read that message on my computer vial Mail.app -- how soon does my iPhone realize that this new message has already been read? Is this action of marking the message read pushed to the iPhone immediately just like the new email from the server is pushed to all my devices?