iPhone/iPad email setup (example setup from iOS 10.3.3).
Using Safari, tap on this link: https://mail.pvtn.net/iphone/
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It will ask you for confirmation.
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If you need to remove an email account from your older iPad device, go to Settings, General, and click on Profile.
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To remove an account from a newer iOS device, navigate to your settings and select “Passwords and Accounts.”
From the “Accounts” section, tap an email account – once done, scroll to “Delete Account.”