To update your email address, head to your dashboard, and select "Manage Users" under "Settings." From there you can add a new user by clicking "Invite a new user" from the top. You will essentially be creating a new user for yourself with the new email address you would like to use going forward. When you get to the privileges page, be sure to click "Set to All Access" to provide admin privileges and complete the process.
You should receive an email with a link to verify the new account and set up a password. Once that is done, you can log in with the new email and password. To remove the old email, visit the "Manage Users" tab and select the profile with the email you would like removed. You will then see an option to delete the user.
If you would like to change the notification settings associated with the email users on your account, you can update these by selecting "Notifications" under "Settings."
If you have any additional questions, please feel free to reach out.