Follow these steps to set up an IMAP or POP3 account:
Step 1: First, tap the Settings icon on the Home screen.
Step 2: In Settings, tap Mail, Contacts, Calendars, and then tap Add Account.
Step 3: In the screen that appears, tap Other.
Step 4: Enter your email information:
password: your email password
incoming mail server: mail.domain.com
outgoing mail server: mail.domain.com
Step 5: Make sure the Account field is set to On, and then tap Done to save the account, which you can now access through Mail.