Postscript vs Attentive (2026): Which SMS Marketing Platform Is Better for Shopify?

Shopify integration depth

Postscript was founded specifically to build the best Shopify SMS platform. This focus shows in the integration depth:

For Shopify merchants, Postscript's native-first approach produces less friction in setup and more options for Shopify-specific triggers and personalisation.

Subscriber growth tools

Both platforms have opt-in tools (popups, keyword opt-in, checkout opt-in), but Attentive's subscriber acquisition technology — particularly its Two-Tap mobile opt-in — is industry-leading and produces higher opt-in conversion rates than Postscript's comparable tools.

If maximising SMS subscriber list growth speed is the priority, Attentive's subscriber acquisition infrastructure has an edge. Postscript's tools are fully functional but don't match Attentive's subscriber acquisition optimisation.

Automation flows

Both platforms support the full set of ecommerce SMS automation: - Welcome series - Abandoned cart - Browse abandonment - Post-purchase - Win-back / lapse flows - Shipping notification - Review request

Postscript's flows are configured within a Shopify-centric interface with natural access to Shopify properties. Building a win-back flow segmented by Shopify customer tags is straightforward.

Attentive's flows are more sophisticated for complex branching logic and large-scale segmentation across non-Shopify data sources. For enterprise brands with complex data requirements, Attentive's flow capabilities are more powerful.

Pricing

Postscript: consumption-based — approximately $0.01–0.015/SMS in the US with no minimum platform fee on lower plans. Monthly costs scale directly with send volume. Self-serve setup available.

Attentive: enterprise contracts — typically $400–2,000+/month depending on list size and features. No self-serve tier; requires sales engagement and a contract.

For brands spending under $500/month on SMS, Postscript's consumption pricing is significantly more accessible. For brands spending $2,000+/month, compare Attentive's contract pricing against Postscript's consumption cost at your send volume.

Verdict

Postscript for Shopify brands who want the deepest Shopify integration, a self-serve no-contract model, and competitive pricing at mid-market SMS volumes. The Shopify-native approach is a genuine advantage for Shopify merchants.

Attentive for enterprise Shopify brands (doing $20M+/year) where subscriber acquisition scale, enterprise-grade compliance infrastructure, and non-Shopify channel support justify the higher cost and contract requirement.

Frequently Asked Questions

Can I switch from Attentive to Postscript?

Yes. Subscriber lists can be exported from Attentive and imported to Postscript. Note that TCPA consent records are the critical element — you need to ensure you have documented consent records for all subscribers you migrate. Postscript's team can assist with migrations from Attentive.

Does Postscript work with Klaviyo?

Yes. Postscript and Klaviyo integrate — SMS opt-ins from Postscript can sync to Klaviyo for unified customer profiles, and Klaviyo segments can trigger Postscript SMS flows. Many brands use Klaviyo for email and Postscript for SMS, with the two platforms sharing customer data.

What is the average SMS subscriber list size for DTC brands?

SMS lists typically grow at 20–30% of the rate email lists grow. A brand with a 50,000-person email list might have 10,000–15,000 SMS subscribers. SMS lists are smaller but more engaged — SMS click-through rates (5–15%) far exceed email click-through rates (1–3%). Revenue per SMS send is typically higher than revenue per email send when lists are well-maintained.

Is SMS marketing better than email for abandoned cart recovery?

SMS and email serve different recovery scenarios. SMS is immediate (99% of texts are read within 3 minutes) — ideal for short recovery windows where the customer is still in a buying mindset. Email allows longer-form content for consideration-heavy products. The most effective abandoned cart strategy uses both: send SMS 30–60 minutes after abandonment, then email follow-ups at 1, 24, and 72 hours. Together they recover significantly more abandoned carts than either channel alone.

What compliance requirements do I need for SMS marketing?

US SMS marketing requires TCPA compliance: explicit written consent to receive marketing texts, clear opt-out instructions in every message (STOP keyword), and honoring opt-outs immediately. CTIA guidelines require proper opt-in language that includes your brand name, message frequency disclosure, and carrier notification. Both Postscript and Attentive handle compliance framework — but the consent collection language in your opt-in forms must be reviewed for accuracy.