You can check and send mail with any of your Email accounts with [ Webmail ] by logging in here --> [ https://yourservername.x10hosting.com:2096 ]
replace [ yourservername ] with name of your x10hosting's free-hostin server
If you don't want to use Webmail, you can add your email address to "Mail" on your iPhone. In cPanel, go to your Email Accounts, and choose Configure Mail Client. It will give you IMAP and SMTP settings, which you can put into your iPhone to send and receive mail.