Reply To: email the customer who purchased the product when the custom field is updated

• jarvis

• January 21, 2022 at 4:31 am

To add to this, are you using WooCommerce for products and orders?

If so, a pseudo answer would be something like:

Look at transition_post_status
When the post is updated, you need to get the post ID

You then need to Get List of WooCommerce Customer Emails Who Purchased a Specific Product

Now you have the customer email, you can use wp_mail()

Hope that helps!