How to logout of email on iPhone 6?

Email settings can be accessed through the settings menu on the iPhone 6.

After clicking on settings, click on the ‘mail, contacts, calendars’ option.

The iPhone has separate settings for each mail account that you use. If, for example, you want to turn off yahoo mail, then choose the yahoo mail option.

Inside the email account, you chose an icon for the mail account with a toggle button. Turn the toggle button off so that the mail is stopped.

If you want to log in again to your mail account, you will have to turn the toggle button again. (See Why do some people love iPhones that much?)

In the same menu, there is an option called ‘Delete Account’. This option will delete that email account for good.

If you have multiple email accounts, then repeat the steps for each of those accounts. (See Why people are buying the iPhone 7?)