Postscript vs Retainful
A side-by-side comparison for e-commerce sellers — platforms, pricing, free trials and ROI.
| Category | Email & SMS | Email & SMS |
|---|---|---|
| Platforms | Shopify DTC | Shopify WooCommerce DTC |
| Pricing | Free trial; usage-based, paid plans from $100/mo | — |
| Free trial | Yes | Yes |
| Affiliate program | Direct | — |
| ROI | Turns SMS into a measurable revenue channel, with top brands earning a strong multiple on every dollar of texting spend. | Run automated cart-recovery and win-back flows across three channels to recover abandoned revenue and turn one-time buyers into repeat customers. |
Which should you choose?
Postscript
Shopify and Shopify Plus DTC brands that want SMS as a dedicated, high-converting revenue channel.
Retainful
Shopify and WooCommerce stores that want cart recovery and retention automation across email, SMS and WhatsApp from one tool.
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
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
Other tools to consider
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AI-driven ecommerce personalization and product recommendations for Shopify brands
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Easy, low-cost mass SMS marketing with automation and keywords
Lets businesses run bulk SMS campaigns and autoresponders to reach their list at scale starting at $29/month.
🚀 DTC / Own Store🛍️ Shopify🧩 WooCommerce
Free plan available; paid from $29/month
Free trial
Affiliate
Shopify-first SMS marketing with flows and segmentation
Automated abandoned-cart and promo texts recover lost sales with high open rates and strong return on texting spend.
🛍️ Shopify🚀 DTC / Own Store
Free to install; usage-based pay-as-you-go
Free trial
Affiliate