Enter account settings directly on iPhone or iPod touch

1. If this is the first account you’re setting up on iPhone or iPod touch, tap Mail. Otherwise, from the Home screen choose Settings > Mail > Accounts > Add Account.
2. Choose your email account type: Other
3. Enter your account information:
   • Your email address
   • The email server type (IMAP, POP) We recommend IMAP for your phone
   • The Internet host name for your incoming mail server (which may look like “mail.yourdomain.com”)
   • The Internet host name for your outgoing mail server (which may look like “mail.yourdomain.com”)
   • Your user name and password for incoming and outgoing servers (your username is your email address)

Page 99 on the iphone user manual http://manuals.info.apple.com/en/iPhone_User_Guide.pdf