Step 1: Open the Settings app on your phone or tablet. The icon looks like this:
Step 2: Go to Mail. (On older devices, it will say Passwords & Accounts)
Step 3: If you tapped on Mail in Step 2, tap on Accounts.
Step 4: Tap on Add Account (pictured). If Add Account is not listed, try going to Step 5.
Step 5: Tap on Other.
Step 6: Tap on Add Mail Account.
Step 7: Enter the following details (pictured), then press Next.
Step 8: Enter the following details (pictured), then press Next.
Step 9: Click Save. If you received any error message here, go back to Step 8 and retype your full email address and password in the appropriate fields.
That's it. You may now open your Apple Mail app (icon pictured below) and start accessing your email!