Discount codes at checkout
For embedding discounts into the invoices sent out by the app, you have 3 options:
1) You can apply discount codes individually to the draft orders that the app creates for your customers. You can find the draft order of a particular customer by searching for draft orders by tag (we tag the draft order with the customer's name exactly as it appears on Facebook)
Then you can click the "Add discount" link to give them an individual discount on their order.
2) You can also apply a global discount to ALL draft orders created through the app. This isn't done through a discount code, but is a global % of $ amount off for all draft orders created through the app.
3) Finally, if you switch your invoice page to the cart page instead of the checkout page, you can let your shoppers enter their own discount codes. This is an advanced feature of the app (not available on the Boutique Plan) and generally not recommended for reasons explained in the article.