FAST turns clicks into conversations—and conversations into conversions. Let shoppers contact you instantly through their favorite messaging apps. With smart prefilled messages and a responsive chat widget, FAST makes it easy for customers to reach you, boosting engagement, loyalty, and sales—all through a seamless chat experience on your store.

Go beyond the basics with the Klaviyo marketing app. Klaviyo syncs Shopify data in milliseconds so every message and insight reflects what’s happening in your store right now. Unify data from 350+ integrations and boost marketing performance with campaigns, smart segmentation, and automated workflows from Klaviyo’s AI Agents. Over 117k brands use Klaviyo and Shopify to grow faster with personalized emails, SMS, WhatsApp messages, and marketing automation tools that turn browsers into buyers.

Manual & unreliable tracking, inactive creators, and fraud kill your affiliate program. UpPromote helps Shopify brands turn affiliate partnerships into a measurable growth channel. Save admin hours with automated tracking, management and PayPal payouts. Get the actionable data and insights you need to build robust programs, track ROI, and scale what works. Keep your ambassadors motivated with flexible commissions, bonuses, and gifts. Block coupon leaks and discount abuse to protect your profits.

Use STOQ's Preorder or Notify Me button to create waitlists for out of stock products. Offer pre-order, backorder, presales with deposits or partial payment and unlock preorder revenue today. Or send back in stock when you restock via email/SMS automatically. Customize everything with 24*7 help. With STOQ, send back in stock alerts and get preorders with many features built for you - multiple locations, Klaviyo sync & back in stock emails, analytics, markets, reminder alerts & more!

Turn single-item carts into multi-product orders. AOV.ai Bundles brings Frequently Bought Together, Volume Discount, Mix-and-match, Bundle Builder, fixed product bundles, and product recommendations into one install. Set up volume tiers, related-product upsells, or mix-and-match groups. Match your storefront, reach the right shoppers, and see what each offer earns. Skip the app stack. 6 offer types in one engine. Works with all Online Store 2.0 themes, including Dawn and Horizon.