KlaviyoFreemium
AI-powered email and SMS platform built for ecommerce — Shopify integration and predictive segmentation.
Marketing comparison
Klaviyo vs Postscript
Pricing, pros, cons, and ideal use cases — side by side.
PostscriptPaid
SMS marketing platform built exclusively for Shopify — AI flows, campaigns, and subscriber-level personalization.
At a glance
| Klaviyo | Postscript | |
|---|---|---|
| Pricing | FreemiumFree up to 250 contacts. Paid scales with list size, from $20/month. | PaidStarter plan from $100/month. Scales with messaging volume. |
| Category | Marketing | Marketing |
| Ideal for | EcommerceDTC BrandsShopify Stores | Shopify StoresDTC BrandsEcommerce SMBs |
Pros & cons
Klaviyo
Pros
- Best ecommerce integrations
- Predictive AI features
- Detailed segmentation
- Email + SMS combined
Cons
- Gets expensive past 50K contacts
- Steep learning curve
- Overkill for non-ecommerce
Postscript
Pros
- Native Shopify integration
- Quick setup
- Pricing friendlier than Attentive
- Strong AI flows
Cons
- Shopify-only
- Minimum monthly fee
- SMS costs on top
Which should you choose?
Klaviyo is the lighter-weight option (Freemium), while Postscript sits higher on the pricing ladder (Paid). Klaviyo is built around ecommerce; Postscript leans more toward shopify stores. Shortlist the one whose strengths line up with your biggest constraint.