Why are you not getting any emails on your iPhone?

You will need to check your settings. If you think they look okay and you still do not get your email, then remove all your email details from the phone, then put all the information back into your iphone, hopefully by doing this you should start getting your emails. Some email providers require that you enable mobile email on your settings with them. So you should sign in to your email from another device like a computer and go into your email settings and preferences for your email to ensure that if you do need to enable mobile email that this setting is on or active.