If you need to set up email on your iPhone then check out this step by step tutorial.
You’ll be guided through the complete process of setting up a POP or IMAP email account on an iPhone. This is ideally suited for people who have a work email or their own hosted website.
Before embarking on the tutorial you will need to have your email username and password available along with your incoming and outgoing mail server settings, which you can obtain from your ISP or IT staff.