Is there a way to do this in the iPhone? In email programs such as Outlook and Thunderbird, you can choose to have some IMAP folders appear/update and to exclude (unsubscribe) others. I would like to have my iPhone set to Push for email, but it's sort of annoying because it notifies me every time I have a new piece of mail in my SPAM folder... if I could tell the iPhone to unsubscribe this folder, then it would solve the problem. As it is, when I set it to Fetch (every 15 minutes) instead, it only notifies me when new mail has arrived in my Inbox... but then, it's not instantaneous (as opposed to "push").