Define min and max product quantities, with a simple interface to set limits on customer orders. Selling a prepackaged set of 6? No problem! Advanced plans offer support for the Buy Button or for setting limits based on a product tag across a group of products. No coding required. Quick and easy setup in minutes. A professional and stylish pop up modal alerts your customers of changes needed to the cart, and when possible allows them to fix their cart quantities with a single click!

Our surcharge app helps you apply conditional fees, late fees, and automatic fees. Quickly add surcharge rules for a small order fee or one time fee. Manage checkout addons, dynamic addons, and free addons to collect an additional charge. Configure a payment surcharge, shipping surcharges, or a bottle deposit. Easily handle an order surcharge, rush fees, deposit fees, service fees, and checkout fees. Bill a membership fee, order & product fees, or a checkout surcharge.

Inbox puts an AI-powered sales associate on your storefront. Buyers can ask questions and get help finding the right products from your catalog. When buyers sign in with Shop, your Inbox agent can personalize replies using their preferences and purchase history from across Shopify. Run Inbox with or without the agent. Inbox learns from your catalog, policies, and store content while you control its tone, style, and rules.

Bundly helps merchants increase average order value with mix and match, build your own (BYOB), build a box, and fixed bundles from existing products and collections. Set min/max selections and quantity rules, then price bundles your way: fixed price, component total, percentage off, or amount off. Inventory is tracked per product with no syncing needed, and bundles can stack with discounts. Ideal for gift boxes, kits, and curated sets. Not compatible with POS or subscription apps.

Smile makes it easy to create a fully branded loyalty program that keeps customers coming back. Reward purchases with points, offer exclusive VIP perks, and thank your biggest fans for sharing with friends. Run engaging promotions like 2x points weekends and special VIP pricing to drive conversions, amplified across every channel with Klaviyo. Powerful analytics give you clarity, confidence, and benchmarks against top brands. Join thousands of Shopify merchants growing with Smile today!