Add your Exchange account
Tap Settings > Mail > Add Account > Microsoft Exchange.
If you're adding another account, tap Accounts > Add Account.
Enter your address
Enter your email address, then tap Next. You can also enter an account description.
Connect to your Exchange Server
After you've entered your email address, choose Sign In or Configure Manually.
Tap Sign In to automatically discover your Exchange account information. If your account uses modern authentication, you'll be guided through a custom authentication workflow.
Tap Configure Manually to set up your account with Basic authentication. Enter your email password, then tap Next. You may also be prompted to enter additional server information, which you can get from your Exchange Server administrator.
Sync your content
You can sync Mail, Contacts, Calendars, Reminders and Notes. When you've finished, tap Save.
Edit your Exchange settings
Tap Settings > Mail > Accounts, then select your Exchange account. You can also set up automatic out-of-office replies, and change how often you want Mail to sync. To change advanced settings, tap your account name to change settings such as SSL and S/MIME.
Find out more about iOS deployment.