My iPhone used to bring my e-mail, but no longer does. What should I do?

[iMore Question]

My iphone used to bring my e-mail, but no longer does. What should I do?

It says, "Unable to join the network."

 

[iOS Gravity]

Re: My iphone used to bring my e-mail, but no longer does. What should I do?

Delete the email account in question, reboot and try adding it again.