Action Details
Requirements and how-to articles for Etsy's action:

paid action
Once you've created a coupon, you can send it to shoppers who have added your item to their basket but haven’t purchased or recently favourited an item from your shop.

You need this to get it done:

Target Shoppers
Choose whether you want to send your offer to abandoned basket shoppers or shoppers who recently favourited something in your shop.
A discount coupon to send to your selected group of shoppers.
Requirements missing or found errors? Report

How-To Articles
A list of useful links for you:

Etsy - Advertising & Marketing Policy
Etsy's official policy for advertising and marketing, which is part of their terms of use.
Etsy Help Centre - How to Set Up Sales and Coupons for Your Shop
Official information about setting up sales and coupons on Etsy.
Etsy - Organising a Productive Promotion for Your Shop
Official help guide for Etsy shop promotions.
Link missing here or found errors? Improve How-Tos