Email not seen on iPhone

When you say that you add the email, are you adding the account where I explained? After that, when you open Mail, you can use the Edit button in the upper right corner to be able to add which mailboxes you see. Add an email account to your iPhone, iPad, or iPod touch - Apple Support

Without an explanation as to what happens when you try, one can only guess. Have you added this email account to your iPhone?

You're welcome.