Postscript vs Klaviyo
Side-by-side from the Top 11 ranking of The 11 Best Email Marketing Platforms for Ecommerce (2026). Last verified June 11, 2026.
The short answer
Klaviyo ranks higher on Top 11 (#1 vs #11) for Ecommerce brands running flows and campaigns. Unbeatable Shopify data integration for powerful segmentation.
At a glance
| Postscript | Klaviyo | |
|---|---|---|
| Top 11 rank | #11 / The 11 Best Email Marketing Platforms for Ecommerce (2026) | #1 / The 11 Best Email Marketing Platforms for Ecommerce (2026) |
| Score (out of 9.4) | 7.1 | 9.4 |
| Best for | SMS-first with email add-on | Shopify power users |
| Pricing | $$$ ($200 to $1,500/mo) | $$$ ($200 to $1,500+/mo) |
| HQ | San Francisco, USA | Boston, USA |
| Founded | 2018 | 2012 |
Postscript
A top-tier SMS platform adding email capabilities.
www.postscript.ioSee full entry in The 11 Best Email Marketing Platforms for Ecommerce (2026)
Klaviyo
Unbeatable Shopify data integration for powerful segmentation.
www.klaviyo.comSee full entry in The 11 Best Email Marketing Platforms for Ecommerce (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.