Your promotional codes are easily created from your back office, via the Marketing > Discounts menu.
Offering discounts is a great way to reward your loyal clients or to encourage the first purchase of new customers. Unlike sales, which are offered to all your clients, discounts offered to your clients give them the feeling of being privileged and benefiting from special advantages. This is a very good lever to nudge a lead and turn them into a client. It can be the trigger that will make your visitors decide to make a purchase.