When customers aren't sure about sizing, they hesitate, or return their order, which gets costly during the holidays. Kiwi helps you remove that uncertainty with customizable size charts and AI-powered fit recommendations that guide shoppers to the right choice. The result? More confident purchases and fewer returns. Add size charts and smart recommendations to any product, from apparel to more. No code, quick setup. Launch in minutes and create a sizing experience that matches your brand.

Go beyond the basics with the Klaviyo marketing app. New stores get a guided setup — sign-up form, welcome email, and abandoned-checkout flow — without leaving Shopify Admin. 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.

Looking to start a printed or embroidered t-shirt business? Or sell wall art or blankets from the comfort of your home? Do it with Printful—we’re a print-on-demand dropshipping supplier ready to support you every step of the way and take care of the boring stuff (you know, like fulfillment). We’ll print, package, and ship your products to your customers. It’s time for you to take full control of your ideas, time, and finances—start or expand your existing online business with Printful!

This app is for merchants with an active Klarna Payments integration. Note: this app will not add Klarna as a payment method. Use this app to boost your business with messaging that lets your shoppers know that Klarna is an available payment option throughout the entire shopping journey.

Create product bundles, kits, multipacks, BOGO offers, volume discounts and mix-and-match bundles with unlimited variants to increase AOV. Let customers build-your-own-bundle, build a box, or shop curated kits. Promote upsells, cross-sells and frequently bought together offers. AI suggests bundle types from order history and catalog. Launch fast with a no-code builder that's flexible for custom storefronts, POS and Headless. Single & multi-SKU inventory sync across 3PL, WMS, ERP & fulfillment.