Klaviyo vs Postscript: Which One Should You Choose in 2026?
Klaviyo
Best for: Shopify brands' email, SMS and CDP Starts at: Free plan 1.6370 reviews Klaviyo review Full profilePick Klaviyo if you need Shopify brands' email, SMS and CDP. Pick Postscript if Shopify SMS marketing matters more. The table and three-question quiz below show where they differ.
Side-by-side comparison
| Feature | Klaviyo | Postscript |
|---|---|---|
| Best for | Shopify brands' email, SMS and CDP | Shopify SMS marketing |
| Pricing model | Freemium, by active profiles | Monthly plan plus per message |
| Starting price | Free plan | Free plan |
| Rating | 1.6 / 5 (370 reviews) | – |
| Headquarters | Boston, MA | Phoenix, AZ |
| Key features | Email marketing, SMS and mobile messaging, Customer data platform, Segmentation and flows, Reviews, SMS marketing | SMS and MMS marketing, Email, Onsite opt-in tools, AI sales agent, SMS marketing, MMS |
| Our score | 89.1 / 100 | 87.5 / 100 |
From each company's public pricing page and review profiles, checked Oct 27, 2026. Prices change: confirm on the vendor's site before you buy.
Pros and cons
Klaviyo
- G2 4.6 from 1,370 reviews
- Deep Shopify and order data
- Free plan to start
- Costs climb with list size
- Trustpilot 1.6 (370 reviews)
Postscript
- G2 4.8 from 164 reviews
- Per-message prices published
- Low-cost Starter plan
- Carrier fees add to costs
- Shopify-centric
Klaviyo vs Postscript: the core difference
Postscript is an SMS marketing platform built for Shopify brands, with tools for list growth, two-way conversations and compliance. Klaviyo runs both email and SMS from one profile, so segments and reporting cover both channels together.
Therefore, you are choosing between a text-message specialist and a combined email and SMS platform.
When each one fits
Brands that see SMS as a major channel, and want specialist features and support, often pick a dedicated tool. On the other hand, brands that want one place for segments, flows and attribution across both channels often prefer an all-in-one platform. Many teams run a specialist SMS tool next to a separate email platform without trouble.
Message costs depend on length, media and destination, so compare real campaigns rather than list prices.
How to decide
To start, estimate the share of revenue SMS should drive. Next, test subscriber capture and an abandoned cart text in each trial. Then compare opt-out rates and revenue per message. In the end, keep the setup your team can manage well across both channels.
Which should you choose?
Answer three questions. The pick is worked out from the prices, scores and features in the table above.
Alternatives to consider
FAQs: Klaviyo vs Postscript
Klaviyo vs Postscript: which is better?
Neither Klaviyo nor Postscript is better for everyone. The side-by-side table compares them point by point, and the short quiz below it recommends one based on your goal, team size and sales channels.
Klaviyo vs Postscript: which is cheaper?
Compare the starting-price rows in the table above, then price Klaviyo and Postscript at your real volume (contacts, orders, seats or spend), because entry plans include different limits and features.
Klaviyo vs Postscript: which suits Amazon and Shopify sellers?
For Amazon and Shopify sellers, the deciding factors are native integrations, how each handles marketplace data, and reporting. The 'Which should you choose' section maps common seller situations to Klaviyo or Postscript.