Knak vs Postscript
A side-by-side comparison for e-commerce sellers — platforms, pricing, free trials and ROI.
| Category | Email & SMS | Email & SMS |
|---|---|---|
| Platforms | DTC | Shopify DTC |
| Pricing | — | Free trial; usage-based, paid plans from $100/mo |
| Free trial | No | Yes |
| Affiliate program | — | Direct |
| ROI | Let marketing teams produce on-brand emails and landing pages in minutes and push them straight into their marketing automation platform. | Turns SMS into a measurable revenue channel, with top brands earning a strong multiple on every dollar of texting spend. |
Which should you choose?
Enterprise marketing teams that need to mass-produce on-brand emails and landing pages and sync them to their MAP.
Shopify and Shopify Plus DTC brands that want SMS as a dedicated, high-converting revenue channel.
Knak
Pros
- Fast, no-code email and landing-page production
- Strong brand control and approval workflows for teams
- Integrates with major enterprise marketing automation platforms
Cons
- Aimed at enterprise marketing teams, not individual ecommerce sellers
- No native ecommerce platform integrations named
- Pricing not shown (demo-request only)
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
Influencer, affiliate and referral programs that turn customers and creators into a sales channel