SMS Marketing Platforms

Attentive vs Postscript: Which SMS Platform Fits Your Volume?

Attentive is a quote-based, AI-driven platform built for mid-market and enterprise brands running SMS alongside email, RCS, and push, while Postscript is a Shopify-native tool with published entry pricing and compliance tooling built for stores that want to start fast without a sales call.

Quick verdict

If you are a Shopify-first store that wants to start SMS quickly, see published pricing before committing, and get built-in compliance tooling without a sales conversation, Postscript is generally the easier and cheaper starting point. If you are a mid-market or enterprise brand doing meaningful SMS revenue already, want AI-driven send-time and audience optimization, and need SMS to work alongside email, RCS, and push in one orchestrated system, Attentive's quote-based platform is usually worth the higher minimum commitment.

Attentive and Postscript both sell SMS marketing software to ecommerce brands, but they were built for different starting points on the growth curve. Postscript grew up Shopify-native, built specifically around the platform's checkout and customer data, with published plan pricing that lets a store see roughly what it will pay before ever talking to sales. Attentive started as an SMS specialist too, but has pushed hard into being a broader mobile and messaging platform, one that layers AI-driven audience building, send-time prediction, and generative copy on top of SMS, email, RCS, and push, sold through custom quotes tied to volume and revenue rather than a public pricing page.

Both platforms compete hardest in the same place, ecommerce brands deciding how much of their marketing budget should go toward a channel with high open rates and real opt-out risk if it is overused. The practical difference comes down to how much scale, multichannel complexity, and AI automation a brand actually needs versus how much it wants to start cheaply, see the price up front, and grow into a bigger plan later.

Feature-by-Feature Comparison

FeatureAttentivePostscript
Pricing modelCustom, quote-based, tied to message volume and revenuePublished tiered plans plus per-message rates, visible without a sales call
Shopify integrationStrong, but built as one supported platform among several ecommerce integrationsNative and Shopify-exclusive, built specifically around Shopify checkout and customer data
Channel breadthSMS, email, RCS, and push in one orchestrated systemSMS and MMS focused, with email handled as a lighter, more limited feature set
AI featuresAI-driven audience building, send-time prediction, and generative campaign copy across channelsAI features exist but are narrower, focused mainly on message assistance rather than full-journey orchestration
Compliance toolingBuilt-in opt-in tracking and consent management as part of the platformStrong, Shopify-specific compliance tooling and help-center guidance built around TCPA and carrier rules
Typical minimum commitmentOften a quarterly minimum in the low thousands of dollarsNo fixed minimum commitment beyond the plan and per-message rate chosen
Best fit by sizeMid-market to enterprise brands with meaningful SMS revenue already flowingEmerging to mid-size Shopify stores getting SMS off the ground or scaling gradually
Sales process to startRequires a sales conversation and custom quote before pricing is knownSelf-serve signup with a published starting price and a free trial with messaging credits
Onboarding and supportDedicated account management typically included at mid-market and upSupport scaled by plan tier, with more hands-on help concentrated in higher tiers

Pricing Compared

TierAttentivePostscript
Entry pointNo published starting price; requires a sales quote, with reported platform fees often starting in the low hundreds of dollars per month before message costsStarter plan at $0/month platform fee plus a $25 minimum spend, with per-message rates around $0.015/SMS and $0.045/MMS
Growth tierQuotes generally move into the low thousands of dollars per month as volume and multichannel usage increaseGrowth plan published at roughly $100/month base, adding unlimited keywords and deeper automation
Mid-market tierTypical mid-market quotes reported in the range of roughly $2,000 to $5,000 per month, often with a quarterly minimum commitmentProfessional plan published at roughly $500/month base, adding branded messaging and more advanced features
Enterprise / high volumeEnterprise quotes reported from roughly $5,000 up to $25,000 or more per month depending on volume and AI add-onsCustom Enterprise pricing available above the Professional tier for the highest-volume Shopify stores

Figures are approximate and gathered from published vendor pricing pages and third-party pricing trackers current as of mid-2026. Attentive does not publish pricing and requires a custom quote, so treat its figures as directional reports rather than a guaranteed rate; Postscript's published tiers also carry per-message and carrier pass-through costs on top of the base plan fee. Verify current numbers directly with each vendor before budgeting.

Attentive does not publish pricing and requires a custom quote; Postscript's published tiers still carry per-message and carrier pass-through costs on top of the base plan fee. Verify current pricing directly with each vendor before budgeting.

Pros & Cons

Attentive

Pros

  • ✔ Orchestrates SMS alongside email, RCS, and push in one system rather than treating SMS as an isolated channel
  • ✔ AI features cover audience building, send-time prediction, and generative copy across the full subscriber journey
  • ✔ Enterprise-grade infrastructure and dedicated account management suited to high-volume, multichannel brands

Cons

  • ✕ No published pricing; every plan requires a sales conversation and custom quote
  • ✕ Typically carries a quarterly minimum commitment that can be dead weight for a smaller or newer SMS program
  • ✕ Total cost including carrier fees and AI add-ons can run well above the number in the initial quote

Postscript

Pros

  • ✔ Published, transparent pricing lets a store estimate cost before signing up
  • ✔ Built Shopify-exclusive, with checkout and customer data integration as the core of the product rather than an add-on
  • ✔ Strong, well-documented compliance tooling and guidance built around TCPA and carrier opt-in rules

Cons

  • ✕ Shopify-exclusive focus means it is not an option for stores on other ecommerce platforms
  • ✕ Email and cross-channel orchestration are noticeably lighter than a true multichannel platform
  • ✕ AI features are narrower in scope, more assistive than the full-journey automation Attentive markets

Which One Should You Actually Pick

You run a Shopify store getting SMS off the ground

Postscript's published pricing, free trial, and Shopify-native setup make it easier to start without committing to a quote you cannot yet size against results.

You are a mid-market or enterprise brand with real SMS revenue already

Attentive's AI-driven send-time optimization and cross-channel orchestration across SMS, email, RCS, and push generally justify the higher, quote-based cost at this scale.

You are not on Shopify

Postscript's Shopify-exclusive design rules it out; Attentive supports a broader range of ecommerce platforms.

Compliance and opt-in tracking is your top concern right now

Both platforms support TCPA-style consent tracking, but Postscript's help-center documentation and Shopify-specific guidance are especially strong for a team building its compliance process from scratch.

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Why Attentive's Pricing Is Harder to Compare Up Front

The biggest practical difference between these two platforms shows up before either one sends a single text: Postscript tells you what a plan costs, and Attentive does not. Postscript publishes its Starter, Growth, and Professional tiers along with per-message rates, so a store can estimate its likely monthly cost within a few minutes on the pricing page. Attentive instead routes every prospective customer through a sales conversation, and the quote that comes back depends on message volume, revenue, channel mix, and which AI add-ons get bundled in. That is not necessarily a red flag, quote-based pricing is common once a platform is selling to mid-market and enterprise accounts with genuinely different usage patterns, but it does mean a smaller brand cannot size the cost against expected results without first giving up contact information and sitting through a demo.

The quarterly minimum commitment that often comes with an Attentive contract compounds this. A brand that is still finding out whether SMS earns its keep as a channel is taking on more financial risk with a locked-in minimum than one testing Postscript's Starter plan, where the only real commitment is the $25 minimum spend. That asymmetry is a large part of why Postscript tends to win the early-stage and self-serve segment of the market, while Attentive concentrates further up the revenue curve where a bigger minimum is easier to absorb.

Shopify Depth Versus Channel Breadth

Postscript's Shopify-exclusive design is a genuine trade-off, not just a limitation. By building around one platform instead of several, Postscript can integrate more tightly with Shopify's checkout, customer, and order data than a tool trying to support many ecommerce platforms at once. That depth shows up in features like cart-recovery flows and subscriber segmentation that key directly off real Shopify store data, and it is the reason Postscript keeps showing up as the recommended default for Shopify merchants specifically, rather than ecommerce merchants generally.

Attentive trades some of that platform-specific depth for breadth across channels. SMS on Attentive does not stand alone, it is meant to work alongside email, RCS, and push, with customer behavior in one channel feeding what gets sent in another. That orchestration is where Attentive's AI investment concentrates: audience-building tools that surface high-intent buyers automatically, send-time prediction tuned to each subscriber's own engagement pattern, and generative tools for drafting on-brand copy and even adjusting product imagery for a campaign. A brand already running email and SMS as separate, disconnected efforts is the clearest case for why that orchestration is worth paying for, since the alternative is manually coordinating what each channel sends and when.

Compliance Is Table Stakes on Both, but Documented Differently

Neither platform can make TCPA compliance someone else's problem, both put the burden of proper opt-in language and consent tracking on the business sending the messages. Where they differ is depth of built-in guidance: Postscript's help center walks through SMS compliance and opt-in requirements in detail scoped specifically to a Shopify store's checkout and signup flows, which matters given that TCPA lawsuit volume has kept climbing and penalties can run up to $1,500 per violation. Attentive also supports consent tracking and double opt-in confirmation as part of its platform, but its documentation and positioning lean more toward enterprise account management handling compliance setup directly with the customer rather than a merchant reading through a help article and configuring it themselves.

For a smaller team without a dedicated compliance resource, that difference in how support is delivered, self-serve documentation versus account-managed setup, can matter as much as which platform's underlying consent-tracking mechanics are technically stronger. Both get you to a defensible opt-in record; how much hand-holding you get on the way there depends on which platform, and which tier, you are on.

Common questions

Postscript is cheaper to start because its pricing is published and there is no fixed minimum commitment beyond the plan and per-message rate you choose. Attentive requires a custom quote, and reported mid-market rates commonly run from roughly $2,000 to $5,000 or more per month, often with a quarterly minimum. At very high volume, a negotiated Attentive contract can end up competitive, but that only becomes clear once you have a quote in hand.

No. Postscript is built exclusively for Shopify, which is precisely why its checkout and customer data integration is as deep as it is. If you are not on Shopify, Attentive or another platform is the option worth evaluating.

Usually not yet. Attentive's AI features and multichannel orchestration are built for brands already generating meaningful SMS revenue and juggling email, RCS, and push together. A smaller or newer SMS program is more likely to end up paying an enterprise minimum for capability it is not yet using.

Attentive has pushed further into RCS, ecommerce's newer richer messaging format with verified sender identity, product carousels, and interactive replies, as part of its broader multichannel push. Postscript remains more narrowly focused on SMS and MMS, so RCS support is a meaningful differentiator if that format matters to your program.

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