Go beyond the basics with Klaviyo’s AI-first B2C CRM. 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 AI customer service tools that turn browsers into buyers.

Stellar's delivery date picker & time slots let customers schedule order delivery right from the cart or product page. Offer local delivery, in-store pickup/click and collect, shipping with a calendar & let users pick date & time as per their convenience. Show estimated delivery date & time & manage same-day delivery with cutoff time. You can also limit orders per time slot. Works with POS & best for food, florist, grocery, bakery to manage store pickup and delivery.