In iOS 8.3, the option to remove an email account from your iPhone is not in the native Mail app, but through the Mail, Contacts, Calendars section of your iPhone's Settings menu. The deletion process only stops your iPhone from exchanging messages with your email account; it does not affect your account's original settings and options.

Step 1
Open the Settings screen by clicking the Settings icon on your iPhone's Home screen.
Video of the Day

Step 2
Scroll down the Settings screen and then select Mail, Contacts, Calendars to open the Mail, Contacts, Calendars screen.

Step 3
Select the account you want to delete in the Accounts section of the screen.

Step 4
Tap Delete Account at the bottom of the screen.

Step 5
Tap Delete From My iPhone on the pop-up box to remove the email account.
