You can easily turn on and off your email notifications from your inbox page.
By default, you will receive email notifications for any new message in conversations assigned to you, or any list you are a part of (see here for more information on using lists)
To turn OFF these email notifications, you can click on the bell icon on your main inbox screen, shown below:
[Once you've successfully disabled email notifications, you will see the bell icon with a line through it]
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