Postscript is an SMS marketing platform for Shopify brands. See features, pricing, pros and cons, and FAQs before you buy.
Category
Marketing
Pricing
Usage-based SMS marketing pricing: entry tier starts around a $49/month minimum spend with per-message rates near $0.015/SMS and $0.045/MMS, scaling down to about $0.007/SMS at higher-volume tiers (~$500/month minimum spend), plus carrier fees. A free trial is available., from $0.007
Postscript is an SMS marketing and sales platform built specifically for Shopify brands. It helps ecommerce merchants grow SMS subscriber lists through desktop and mobile popups, checkout collection, and on-site opt-in tools, then engage those subscribers with campaigns, behavior-triggered automations (such as back-in-stock alerts and abandoned-cart flows), and audience segmentation. The platform includes AI features such as Infinity Testing, which automates message-variant experimentation, and an AI shopping assistant that can converse with customers over SMS. Pricing is usage-based, combining a monthly platform fee with a per-message rate that decreases at higher volume tiers, and a free trial is available. Postscript also offers a managed-service tier, Postscript Plus, for brands that want done-for-you SMS strategy support.
Key Features
SMS list growth tools — Desktop and mobile popups, checkout collection, keywords, and QR codes to grow an SMS subscriber list on Shopify storefronts.
Campaigns & automations — Send SMS campaigns and set up behavior-triggered automations such as back-in-stock alerts and abandoned-cart flows.
Audience segmentation — Segment subscribers and target messages using triggers and user filters.
AI-powered messaging — Infinity Testing automates message-variant experimentation, and an AI shopping assistant can converse with customers over SMS.
Onsite opt-in suite — Landing pages, opt-in forms, and checkout-based collection built to grow SMS lists directly from the storefront.
Managed service (Postscript Plus) — An optional managed-service tier offering done-for-you SMS strategy support for brands that want hands-on help.
Pros & Cons
Pros
Purpose-built for Shopify, so setup and store data fit ecommerce workflows out of the box
Automation and segmentation tools (back-in-stock, abandoned cart, keyword triggers) go beyond basic message blasts
AI features like Infinity Testing and an AI shopping assistant help automate message optimization and customer replies
Usage-based pricing with a free trial lowers the barrier for smaller brands to start with SMS
Cons
Per-message pricing that scales with SMS/MMS volume plus carrier fees can get costly for high-volume senders
Tiered pricing (monthly minimum spend plus per-message rates) is more complex to estimate than a flat-fee plan
Deepest integration value is realized on Shopify specifically, which may limit fit for brands on other ecommerce platforms
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