If you're currently receiving Kickstarter emails, and you'd like to opt out, visit your notifications page to adjust your settings. Make sure you’re logged in to Kickstarter when you do so. From the notifications page you’ll be able to unsubscribe to specific project updates or from Kickstarter newsletters.
If the mail icon for a certain category is blue, that means that you have email notifications turned on.
Alternatively, if you're unsubscribing from a newsletter, you can just click the Unsubscribe button in the footer of the email you received.
Using the Kickstarter app? Click here to learn how to manage notifications in the app.