Postscript
Shopify native SMS purpose built for ecommerce, strong on automated flows and revenue per message.
Postscript is SMS designed exclusively for Shopify, and the focus shows. Setup is fast for a Shopify store, automated flows like abandoned cart, welcome and post purchase are first class, and reporting leans on revenue per message rather than vanity sends. A free Starter plan on pay per message lets small stores start cheaply, while Growth and Professional add automation, AI tools and support. The limits follow from the focus: Postscript only serves Shopify, the platform fee plus per message and carrier costs add up as you scale, and a dedicated short code is a meaningful extra. Outside ecommerce it is the wrong tool.
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SMS that speaks fluent Shopify, and measures itself in revenue, not sends.
In its favour
Held against it
The ecommerce specialist, if you live on Shopify.
Postscript scores well across automation, ease and value for its target buyer. The ceiling is breadth: it is single platform by design, which is a strength for Shopify stores and a hard stop for everyone else.
Scored against the same five weighted criteria we use across SMS marketing. See the rubric →
a Shopify store that wants native SMS with strong automated flows and revenue focused reporting.
a business not on Shopify, or any sender who needs SMS across multiple ecommerce or non ecommerce platforms.
What it costs
Monthly plan plus per messagePricing as of June 2026. Postscript Starter is free on pay per message at about $0.015 per SMS and $0.045 per MMS, Growth adds automation from $25 a month and Professional from $500, all with a 30 day trial and $100 in credits; US carrier fees of about $0.004 per SMS pass through at cost, and a dedicated short code runs about $750 a month through carriers. Check the vendor for current pricing.