How do I use email wishlist notifications?

Solution 1:

This setting is not at all clear, and rather heavily buried in their UI. First, start by clicking the account drop down in the upper right, and choose "Account Details" which takes you to:

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Then, click the "Configure your email preferences" button. You'll end up here:

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From here, you can opt to receive emails when items on your wishlist go on sale. I believe by default this is turned on. There aren't many configuration options, sadly...