If you are having trouble sending and receiving email, your account settings including your mail servers may need to be verified.
1.
From the Settings app, scroll to and tap Passwords & accounts.
2.
Select the email account you wish to verify settings for.
3.
Tap Account settings.
4.
Select the address from the list.
5.
From the 'Server settings' section, tap Incoming settings or Outgoing settings to edit username or SMTP server.
6.
Tap DONE once your information is verified.
7.
You've completed the steps!
