Recently I replaced my Blackberry with iPhone 4s at work. It was such a relief. Using Blackberry was a total nightmare because of various reasons. Everybody had different reasons to not like it. Here are some that always pushed me away from Blackberry.
Anyhow this post is not about Blackberry. This post is about setting up Microsoft Exchange email folders on your iPhone 4s. After I received my iPhone from our IT guys, I noticed that I was only getting emails in my Inbox folder. I have set up a lot of email rules to move emails to various folders when they arrive. I remember that on Blackberry I had to make some modifications in sync application so that I could receive emails on selected folders along with Inbox. So following intuition, I went to Settings in iPhone and found the way to do it. Here are the steps that you can follow to push emails from all or selected folders in Microsoft Exchange to folders on iPhone.
Now you will be all set to receive emails from your selected folders on your iPhone.