A 1) Please choose "Add Account" on "Settings" page.
2) Please choose "Others" instead of "iCloud" on "Select Service" page.
3) Please set up in taking these steps below ;

【Incoming mail server】
Host : imap.mail.me.com
SSL : ON
Authentication : Password
Server Port : 993

【Outgoing mail server】
Host : smtp.mail.me.com
SSL : ON
Authentication : Password
Server Port : 587