Postscript
SMS marketing specialist — built exclusively for Shopify.
Overview
Postscript is the only SMS platform in this roundup that does SMS and nothing else, which turns out to be its strongest argument. The flows are deeper, the compliance tooling more robust, and the Shopify-native opt-in experience cleaner than any multi-channel platform bolting SMS on as a feature. The conversational "SMS Sales" product — a hybrid AI + human layer for high-AOV product categories — is genuinely differentiated.
Pros & Cons
Pros
- Specialist focus — SMS gets the attention it deserves
- Conversational AI/human hybrid drives real AOV lifts
- Tight Shopify + Klaviyo integration
Cons
- Pricing not friendly under $20k MRR
- Email features absent — you need Klaviyo/Omnisend alongside
- SMS regulation overhead (TCPA, A2P 10DLC) is real and not trivial
Features
SMS Sales (conversational)
Live human + AI hybrid for 1:1 high-AOV sales
Automated flows
Cart abandon, post-purchase, winback, replenishment
Two-way conversations
Real reply handling, not just outbound blasts
Shopify-native opt-in
Checkbox at checkout, keyword on PDP
Klaviyo integration
Bi-directional audience sync
Pricing
Integrations
Best for / Not for
Best for
Stores past $50k MRR with strong subscriber lists already running email.
Not for
Sub-$20k MRR stores — fixed cost overweights revenue at this scale.
Ready to try it?