About Postscript

Postscript is an SMS and MMS marketing and sales platform designed specifically for Shopify e-commerce brands. It enables merchants to grow subscriber lists through popups, checkout collection, QR codes, and keyword opt-ins. The platform supports targeted text message campaigns, automated SMS flows triggered by customer events, and two-way conversational messaging at scale. Postscript features advanced segmentation based on purchase behavior, AI-powered A/B testing, and detailed revenue attribution analytics. With built-in TCPA compliance and deep Shopify integration, it connects to help desks, email platforms, and review tools to create a unified marketing stack.

Pros & Cons

Pros

Purpose-built for Shopify with deep integration
Free starter plan with low barrier to entry
AI-powered message optimization
Built-in compliance and carrier guideline adherence
Strong revenue attribution and analytics

Cons

Key Features

SMS and MMS campaign management

Automated text message flows

Advanced subscriber segmentation

AI-powered A/B testing (Infinity Testing)

Revenue attribution analytics

List building via popups, QR codes, and keywords

Two-way conversational SMS

Deep Shopify-native integration

TCPA-compliant messaging

Help desk and email platform integrations

Pricing

Starter

Free/month

$25/mo minimum spend
Basic SMS campaigns
30-day free trial
List building tools

Growth

$100