Best free Delivery Customizations powered by Functions Shopify apps in 2026 [Updated]

SMART Checkout Rules & Upsells gives merchants complete control over their checkout experience with flexible validation rules and customization options. Hide, block, sort, or rename payment methods and shipping options based on conditions like customer tags, country, cart value, products, or discount codes. Perfect for managing high-risk orders, blocking COD or specific payment methods like PayPal and Credit Card by customer criteria. Grow your average order value with one-click post-purchase upsells and downsells that appear after checkout. Add checkout blocks including banners and discount codes with conditional display rules. Apply checkout validation and discount logic based on cart total, customer tags, or delivery method. Ideal for B2B stores, international shipping flows, and merchants who need advanced checkout control without coding. Control your checkout rules and increase conversions with smarter upsell strategies.

SMART Bundles Volume Discounts helps you increase average order value with automatic discounts and bundle deals that work seamlessly at checkout. Create product bundles, BOGO offers, Buy X Get Y promotions, volume discounts, quantity breaks, and tiered pricing based on products, collections, variants, customer tags, or cart value. The app supports both automatic discounts and discount codes, letting you run multiple promotions simultaneously without conflicts. Shoppers see their savings displayed clearly in the cart drawer and at checkout, creating a transparent discount experience that reduces cart abandonment. Set up mix and match bundles, bundle deals, and code-based promotions with no coding required.

This app lets you set custom shipping rates based on weight, cart total, quantity, zip code, and product details. Create shipping zones targeting specific countries and postal codes. Choose from tiered pricing, per-unit increments, or percentage-based calculations to match your business needs. Hide, sort, and rename delivery methods at checkout using over 15 conditions including customer tags, location, and products in cart. Rate blending combines multiple shipping rates into one clean option for customers. Shipping zones support country, province, and postal code targeting for precise control. No need for Checkout Customization Scripts for delivery customizations. Carrier Service is required only for calculated rates. Perfect for stores needing flexible shipping rules and checkout delivery method management.

This app helps you create advanced Shopify Functions for discounts, payments, delivery, and checkout validations without coding. Build tiered discounts, BOGO functions, bundles, volume discounts, and custom promos using a simple no-code function creator. Perfect for migrating Shopify Scripts to Functions with just a few clicks. Works on all Shopify plans - no Plus plan required. Set up payment customizations, delivery customizations, and checkout rules to control your store's logic. The script editor alternative makes it easy to apply bulk discounts, automate bundle offers, and create flexible discount functions. A complete Shopify Scripts replacement solution with active maintenance to help you build custom functions and manage your checkout experience.

SMART Address Validator helps prevent delivery errors by checking and validating customer shipping addresses in real-time. When customers enter incorrect or incomplete addresses, the app catches these mistakes before orders are shipped, reducing failed deliveries and costly returns. Perfect for businesses dealing with frequent address mistakes or shipping to complex delivery areas, this address validation tool ensures packages reach their intended destination. By confirming address accuracy during checkout, merchants save time on order processing while improving customer satisfaction through reliable delivery service. The app works seamlessly with your existing order fulfillment process to maintain smooth shipping operations.

Checkout Blocks helps you customize your thank you and order status pages without any coding required. Add content blocks to display post-purchase information and set order value limits for your store. Shopify Plus merchants get access to advanced checkout customization features. Create custom fields like delivery notes or terms agreements, validate address formats, and hide or reorder delivery and payment methods. You can also set up custom order discounts and shipping discounts directly in your checkout. The app makes it simple to tailor the checkout experience to match your business needs while maintaining a professional look across all customer touchpoints.