With Postscript, drive conversations and conversions across all stages of the customer journey. Whether 1:1 or at scale, Postscript assures your texts are customized, conversational, and compliant. Use SMS Marketing to grow your list, develop your message strategy, deliver customer service, and drive purchases. Postscript AI works harder for you by staying on-brand, unlocking customer insights, and driving revenue with Brand Center, Infinity Testing and Shopper.

Prevent broken links from impacting SEO. Set up 301 redirects, 404 redirects, & URL redirects for any changed or removed URLs. Handle site migrations & bulk product updates by importing 404 redirects & URL redirects. Protect SEO rankings & revenue by resolving 404 page errors & broken URLs before they impact search authority. AI Redirects scans your store, finds the best replacement page for each 404 & creates the 301 redirect automatically, with a confidence score you control.

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.

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.

With flexible, pay-as-you-send pricing, we’re helping brands grow and scale without excessive costs. Grow your email & SMS lists with customizable forms and pop-ups. Easily identify high-value customer segments and design and send multi-channel campaigns that convert. Hit all the right moments with automated flows for Welcome, Abandoned Cart, & more. All with AI tools that help you work smarter & 24/7 support.