Kit (ConvertKit) vs Postscript
A side-by-side comparison for e-commerce sellers — platforms, pricing, free trials and ROI.
Creator-focused email marketing with automations, sequences, and commerce features
| Category | Email & SMS | Email & SMS |
|---|---|---|
| Platforms | Shopify WooCommerce DTC | Shopify DTC |
| Pricing | Free plan available | Free trial; usage-based, paid plans from $100/mo |
| Free trial | Yes | Yes |
| Affiliate program | — | Direct |
| ROI | Creators selling products can trigger automated email sequences based on purchases and subscriber tags. | Turns SMS into a measurable revenue channel, with top brands earning a strong multiple on every dollar of texting spend. |
Which should you choose?
Creators and digital-product sellers who want simple, powerful email automation.
Shopify and Shopify Plus DTC brands that want SMS as a dedicated, high-converting revenue channel.
Kit (ConvertKit)
Pros
- Clean, easy automation builder
- Strong for creators and digital sellers
- Generous free tier
Cons
- Less tailored to physical-product ecommerce
- Limited SMS capability
- Reporting is fairly basic
Postscript
Pros
- Deeply integrated with Shopify and Shopify Plus data
- Strong compliance and deliverability for US texting
- Conversational selling features drive measurable replies and revenue
Cons
- Shopify-only, so not an option for WooCommerce or Amazon sellers
- Usage-based pricing plus message costs add up at scale
- SMS-focused, so you still need a separate email tool
Other tools to consider
Email & SMS marketing built on unified customer data for ecommerce
Collect, manage, and display product reviews and UGC for ecommerce
AI marketing copilot for product descriptions and brand-voice copy at scale
AI-driven ecommerce personalization and product recommendations for Shopify brands
Easy, low-cost mass SMS marketing with automation and keywords
Shopify-first SMS marketing with flows and segmentation