Click on your settings icon.
Select “Mail, Contacts, Calendars”
Select “Add Account”
Fill your email address and password and then click on “Next”
Once the account has verified successfully you will then see blue ticks next to each field that was filled in and you will immediately be taken to the screen shown below. At the top right hand side select “Save” to complete the setup of your Exchange account.
Once you have completed the steps above you will see your E-mail account listed in the accounts section under “Mail, Contacts, Calendars”
Well done you have successfully added your email account to your iPhone.