Retainful vs Postscript
A side-by-side comparison for e-commerce sellers — platforms, pricing, free trials and ROI.
| Category | Email & SMS | Email & SMS |
|---|---|---|
| Platforms | Shopify WooCommerce DTC | Shopify DTC |
| Pricing | — | Free trial; usage-based, paid plans from $100/mo |
| Free trial | Yes | Yes |
| Affiliate program | — | Direct |
| ROI | Run automated cart-recovery and win-back flows across three channels to recover abandoned revenue and turn one-time buyers into repeat customers. | Turns SMS into a measurable revenue channel, with top brands earning a strong multiple on every dollar of texting spend. |
Which should you choose?
Shopify and WooCommerce stores that want cart recovery and retention automation across email, SMS and WhatsApp from one tool.
Shopify and Shopify Plus DTC brands that want SMS as a dedicated, high-converting revenue channel.
Retainful
Pros
- Combines email, SMS and WhatsApp in a single dashboard
- Strong focus on revenue recovery and repeat-purchase automation
- Free plan with no credit card required to start
Cons
- Entry pricing not shown on the homepage
- Geared mainly to Shopify and WooCommerce stores
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