To change your email address, you will click on Manage Account by hovering over your avatar. From Manage Account, click on Account.
Then click on Update Email Address and the window below will be visible.
You will then enter your New Email Address, re-enter to Confirm New Email, and Enter your existing Narrative Password. Then click on Submit.
You will now be sent Verification Emails to both your old Email Address and the new Email Address you entered. You must verify each email account to ensure you are in control of both email addresses.
The emails will look something like this picture below.
Once you have verified on both your old and new email address, the process is complete.