Use Discounty for product quantity-based discounts and keep Shopify coupons for checkout

Discounty can handle product-level quantity/bulk discounts by using an Advanced Discount Code campaign with the Product Discount module (apply to selected products/variants with a minimum quantity). For order-level coupon workflows created by Klaviyo/Shopify, continue using Shopify Discount codes at checkout. Note: Discounty cannot provide customer-segmentation rules, BOGO/free-product logic, auto-apply/sync of Shopify coupons into a custom cart widget, or custom storefront widget integrations. If you only need quantity-based discounts on specific variants, set up a Product Discount in Discounty and use Shopify (via Klaviyo) for standard checkout coupons. For the unsupported needs (customer tags, BOGO, checkout-cart syncing, UI integration), consider a custom integration or a different app that explicitly supports those features.