How do I implement a wishlist product on sale email notification?

Summary:

I see that the existing email notifications for wishlists are the following: Comment and Product, New Member.

We want to implement functionality to notify customers when their wishlist products go on sale.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

storefront classic

Code Snippet (add any code snippets that support your topic, if applicable):