Attentive vs Postscript vs Maestra: SMS Platforms Compared

John Carsia

Account Executive at Maestra

Profile

Attentive and Postscript are the two names every DTC brand hears first when SMS gets serious — and they’re built for different buyers. Attentive is a sales-led enterprise program with negotiated contracts; Postscript is self-serve software that lives inside Shopify.

Comparing them is harder than it should be. Attentive publishes no prices, Postscript’s “free” plan carries a monthly minimum, and both platforms’ sharpest weaknesses only show up in reviews, not on feature pages.

This comparison breaks all three down across 12 categories — pricing, messaging, customer data, loyalty, support, and more — using live pricing pages, current product docs, and verified reviews from the last 12 months. Here’s the category-by-category breakdown.

Quick Verdict — the Best SMS Marketing Platform for Each Use Case

Attentive, Postscript, and Maestra split cleanly by buyer. Attentive fits enterprise brands that want managed SMS with the deepest compliance tooling in the category. Postscript fits Shopify stores running SMS as a self-serve revenue channel. Maestra fits mid-size, enterprise, and rapidly scaling brands that fold SMS, email, built-in loyalty, and site personalization into one platform on a real-time customer profile.

Attentive — best for enterprise DTC brands with six- or seven-digit SMS lists and legal exposure to manage. Custom pricing (contact sales).

Postscript — best for Shopify-exclusive brands that want deep SMS tooling with published rates. $0/mo platform fee with a $49 monthly minimum spend.

Maestra — best for brands replacing an SMS tool, an email platform, and a loyalty app with one system and a dedicated team. From $2,990/mo (150,000 profiles).

Attentive vs Postscript vs Maestra Compared

SMS, MMS & RCS Messaging

SMS messaging winner: Postscript — the deepest SMS-native toolkit of the three, up to actual humans closing sales over text.

Attentive

Attentive runs SMS programs for brands like Crocs, UGG, and Nespresso, and the infrastructure reflects that scale. Its RCS Hub is rolling out branded, media-rich messaging, and Attentive Concierge pairs conversational AI with AI-assisted live agents for two-way replies around the clock.

The standout is Text-to-Buy with Shop Pay: through the Shopify partnership, a customer can complete a purchase in as few as two text messages. No other platform here has checkout that close to the message itself.

Building an SMS campaign in Attentive’s Campaign Composer

Postscript

Postscript bet the whole company on SMS, and the depth shows. Infinity Testing generates and tests thousands of on-brand message variants inside automations, Shopper answers subscriber questions in brand voice in under a minute, and CashBack grows revenue without training customers to wait for discount codes.

Then there’s SMS Sales — US-based associates, seven days a week, holding 1:1 conversations that convert hesitant subscribers. Texting becomes a staffed sales channel, not just an automation, and neither competitor offers a real equivalent.

Postscript’s flow builder for SMS automations

Maestra

Maestra sends SMS, MMS, and RCS through short codes, 10DLC, and toll-free numbers, with Tap-to-Text subscriptions — at listed rates from $0.0045 per US SMS, the lowest of the three. The difference is where the messages come from: every text shares frequency caps, suppressions, and segments with email, push, and on-site campaigns.

That shared profile is what moves revenue in published cases. Selkirk grew SMS-attributed revenue by 149% year-over-year after moving its program to Maestra — alongside 55% email revenue growth, not instead of it.

Maestra doesn’t market a staffed conversational inbox, though: inbound replies feed opt-out detection, and brands wanting agent-run texting conversations will find that specialty at Postscript.

Maestra’s SMS editor

List Growth & Sign-Up Tools

List growth winner: Attentive — its sign-up units are the most battle-tested in the category.

Attentive

Attentive’s patented two-tap sign-up is its signature mechanic: subscribers join from a mobile page in two taps, no phone number typed. That head start in acquisition is why Attentive lists are famous for growing fast, and AI Grow layers optimization on top of the sign-up experiences.

When Yotpo shut down its Email & SMS product at the end of 2025, it chose Attentive to take over its managed customers — an endorsement of exactly this list-building muscle.

Attentive’s sign-up form builder for a Mobile Fullscreen email and SMS opt-in

Postscript

Postscript’s Onsite Opt-in widgets handle acquisition on Shopify storefronts, and CashBack gives shoppers a reason to subscribe that isn’t another 10% coupon. It’s a solid toolkit — just aimed at one storefront platform and primarily US traffic.

Keyword-based SMS opt-in setup in Postscript

Maestra

Maestra grows lists through popups, quizzes, embedded blocks, and banners that run from the same segments as messaging — including popup templates with one-click SMS opt-ins. One sign-up unit feeds SMS, email, and push simultaneously, so acquisition spend never builds a single-channel list.

Maestra’s pop-up creation page with one-click SMS opt-ins

AI Features

AI winner: Postscript — comparable AI depth to Attentive, without the add-on price ladder.

Attentive

Attentive AI spans the platform: AI Journeys personalizes triggered messaging, AI Pro handles identity and personalization beyond the browser cookie, and AI Grow optimizes sign-up. AI Essentials ships with every plan — but the rest are sold as tiered add-ons, so the AI you see in the demo isn’t necessarily the AI in your contract.

Postscript

Postscript’s AI is part of the product rather than a price tier. Brand Center trains the AI on your brand voice and FAQs, Infinity Testing runs continuous message-variant experiments no human team could staff, and Shopper handles inbound questions in brand voice.

For a channel where copy is the whole customer experience, always-on testing at that scale is a genuine edge.

Maestra

Maestra treats AI as an active build-out across the whole platform, not a single bolt-on feature. It shows up at two levels.

At the top sits the Maestra AI assistant, a business growth assistant that reads your live metrics and proposes decisions — 12-month performance summaries, the key challenges behind the numbers, and the next flows worth launching. Through an MCP connection, you can also work with your Maestra data from the tools you already use, like Claude or ChatGPT, instead of switching windows.

Maestra’s AI Assistant summarizing 12-month performance and recommending next flows

At the other end are targeted algorithms with a direct revenue job. Next Best Offer predicts when each customer is most likely to buy next and times a campaign to that moment, while 14 recommendation algorithms personalize product blocks across the site, email, and SMS.

Maestra’s product recommendation presets

These aren’t demos. Selkirk Sport cut 15 hours of manual work after moving product recommendations — Frequently Bought Together, Similar Products, recently viewed — onto Maestra, and now A/B tests algorithms across every placement instead of picking products by hand.

Email

Email winner: Maestra — email is a core channel with personalization depth the SMS specialists don’t match.

Attentive

Attentive’s email product passed 1,000 customers and now carries its own AI Pro for Email, which uses cross-channel and on-site behavior to personalize sends and suppress low-engagement recipients. Deliverability experts handle warm-ups, authentication, and send monitoring — a managed model consistent with the rest of Attentive.

It’s a real email offering, and bundling channels earns a discount. It’s also young next to dedicated email platforms, and it lives inside the same negotiated-contract economics as everything else Attentive sells.

Postscript

Postscript has no email product — by design. The company is explicit that SMS, MMS, and RCS are the whole roadmap, which means every Postscript brand runs a second platform for email, with duplicate segments and split attribution.

If your program is genuinely SMS-only, that’s fine. For everyone else it’s a second bill and a sync job.

Maestra

Email on Maestra is a first-class channel: AMP for Email for interactive messages, sending at up to 500,000 emails per hour, and the same 14 recommendation algorithms personalizing content per recipient. Because email and SMS share one profile, a flow can start with an email and follow with a text only for non-openers — no export, no sync.

Coolibar grew revenue from email and SMS campaigns by 33.6% year-over-year after switching from Klaviyo, with flow revenue up 62%.

Maestra’s visual email composer

Customer Data & Segmentation

Customer data winner: Maestra — the only platform here with a full customer data platform underneath the messaging.

Attentive

Attentive Signal handles identity resolution and visitor recognition, and Audience Manager builds dynamic segments on top — tooling designed for multi-brand, multi-region enterprise programs. AI Pro extends identification beyond the browser cookie, which matters as third-party data keeps degrading.

The catch: the deeper identity tooling sits in the paid AI tiers, so data depth scales with contract size.

Postscript

Postscript offers 45+ segmentation filters with deep Shopify data behind them — order history, products, and subscriber behavior. It’s effective for SMS targeting, but the lens stays SMS-shaped: what subscribers did with your texts and your Shopify store, not their behavior across every channel.

Building a segment in Postscript

Maestra

Maestra’s built-in CDP updates profiles in real time — the platform quotes sub-300-millisecond processing — with identity resolution stitching anonymous and known sessions across devices. Segments draw on full journey behavior: sessions, searches, categories, carts, checkouts, loyalty status.

Every segment is available to every channel at once, so the SMS list and the email list are never out of sync. JOLYN lifted SMS revenue 52% after switching from Klaviyo, with SMS and email running on one profile.

A unified customer profile in Maestra’s real-time CDP

Omnichannel Flows & Automation

Automation winner: Maestra — one canvas orchestrates every channel plus loyalty, promotions, and on-site personalization.

Attentive

AI Journeys automates lifecycle messaging across SMS, email, and push, with RCS joining as it rolls out. For a messaging-first platform the orchestration is solid — triggered journeys, personalization, and the AI layer deciding timing and content.

What’s absent is anything beyond messaging: no on-site personalization steps, no loyalty logic inside the journey.

Attentive’s journey builder

Postscript

Postscript’s automations cover the SMS playbook — welcome, abandoned cart, browse abandonment, winback — with Shopify-native triggers and Infinity Testing optimizing inside the flow. But a one-channel flow can’t do channel arbitration: there’s no “email first, text the non-openers” on a platform without email.

Maestra

Maestra’s journey builder runs email, SMS, push, messengers, loyalty events, promotions, and on-site messages from one canvas, with real-time branching, channel rotation, and A/B testing. A flow can suppress a text because the customer converted on-site an hour ago — the kind of coordination that takes middleware on a two-platform stack.

Svaha USA rebuilt its Back in Stock SMS flow on Maestra to reach its highest-intent audience without an unnecessary 20% discount — part of a stack consolidation that grew total sales 26%.

A Maestra flow combining email, push, pop-ups, paid ads, and loyalty points

Loyalty & Promotions

Loyalty winner: Maestra — the only one of the three with loyalty built into the platform rather than integrated from outside.

Attentive

Attentive connects to loyalty platforms through integrations, and its messaging can reference loyalty events those partners emit. That works — with the usual costs of a second vendor: another contract, another data sync, and loyalty context that’s only as fresh as the integration.

Postscript

Postscript’s CashBack is a genuinely clever promotion mechanic — a “smart coupon alternative” that rewards purchases without blanket discount codes. Full loyalty programs, though, mean adding a dedicated app on top of the SMS bill.

Maestra

Maestra ships built-in loyalty: points, referral programs, a promo code engine, gift cards, and a promotions arbitration tree that decides which offer each customer actually gets. A text can reference a customer’s live point balance without a third-party call.

The consolidation math is documented: UAG replaced Klaviyo, Yotpo Loyalty, and Frosmo with Maestra and cut marketing stack costs by 64% — about $100,000 a year.

Maestra’s built-in Loyalty Program dashboard

Compliance & Deliverability

Compliance winner: Attentive — nobody in SMS matches its legal-defense tooling.

Attentive

TCPA lawsuits target senders, not platforms — and Attentive built its moat here. Litigator Defender automatically suppresses phone numbers associated with SMS litigation (the company cites 55,000+ known litigators removed), and Enhanced Audit Assistant maintains the opt-in and opt-out records a legal complaint demands.

Even Attentive’s unhappy reviewers concede this strength — one 1.5-star review this year still noted, “I appreciate their focus on compliance and how they stay on top of legal issues.” For brands with real legal exposure, this category alone can decide the vendor.

Postscript

Postscript handles compliance with an in-house legal team it calls “the gold standard,” compliant opt-in flows, and automatic quiet hours. For a Shopify brand sending to the US and Canada, that coverage is proportionate to the risk.

Maestra

Maestra confirms subscribers with double opt-in before the first send, and its intelligent opt-out detection understands natural replies like “no thanks” — beyond the standard STOP keyword. Deliverability runs through short codes, 10DLC, and toll-free numbers with the platform managing registration.

Integrations & Platform Support

Integrations winner: Attentive — the widest storefront and geographic coverage of the three.

Attentive

Attentive integrates across e-commerce platforms, marketing clouds, and data warehouses, and sends in 20+ countries with region-specific compliance built in. For multi-brand or multi-region programs, it’s the least constrained option here.

Postscript

Postscript is Shopify-exclusive by design, and its sending is priced for the US and Canada — international texts cost $0.25 per SMS, roughly 28 times the domestic Starter rate. As one G2 reviewer put it, “Unfortunately they don’t integrate with other E-Commerce stores, other than Shopify.”

The upside of the constraint is depth: the Shopify data integration is native and thorough. But a brand expanding to another storefront or another country hits a hard wall.

Maestra

Maestra ships 150+ pre-built native integrations. On the storefront side that includes Shopify, BigCommerce, Magento, WooCommerce, and Salesforce Commerce Cloud; across marketing, ads, support, and BI it covers HubSpot, Google Analytics, Google Ads, Meta, Triple Whale, Recharge, Gorgias, Zendesk, Twilio, Power BI, and Tableau, among others. An open API v3 and a webhook builder connect anything that isn’t on the list, an MCP connection wires Maestra data into AI assistants like Claude and ChatGPT, and if a connector is still missing, Maestra builds it as a tailored API integration at no extra cost, with no dev time on your side. Popups, loyalty, recommendations, and a real-time CDP are built in rather than integrated at all, so there’s less to wire up in the first place.

Reporting & Attribution

Reporting winner: Maestra — the only setup here where SMS and email attribution share one profile by default.

Attentive

Attentive’s dashboards are enterprise-grade, but the numbers draw skepticism: a mid-market marketing manager wrote this April that “the campaign reporting numbers are way overestimated compared to the actual numbers.” Over-crediting is a known pattern in single-channel attribution — every channel claims the sale it touched last.

Postscript

Postscript reports revenue per flow, campaign, and subscriber with Shopify-grounded purchase data, which keeps its SMS math honest. What it can’t see is everything outside the channel: the email that warmed the customer up, the popup that captured them, the loyalty points that closed them.

Maestra

When every channel runs on one profile, attribution stops being a border dispute. Maestra reports revenue across email, SMS, push, and on-site activity from the same customer record — so a sale claimed by SMS isn’t also claimed by a separate email platform’s dashboard.

For a marketing lead reporting to a CFO, one consistent revenue number beats two inflated ones.

Maestra’s Campaigns report attributing revenue across 49 campaigns

Support & Services

Support winner: Maestra — a dedicated team is standard in every subscription, not an enterprise upsell.

Attentive

Enterprise accounts praise Attentive’s CSMs, and G2 pegs typical implementation at about a month — fast for enterprise software. Below the flagship logos, the picture is patchier: smaller accounts describe unresolved technical errors and strategy reviews that never materialized.

Postscript

Support was historically Postscript’s calling card, which makes the recent reviews conspicuous. “Customer service has gone downhill or almost nonexistent… And replacing it with AI support is a leap backward,” reads a January 2026 review from a long-time customer; live chat only unlocks on the Growth plan.

The fundamentals still earn praise — “Our CSM is great and always brings new ideas to the table,” per a G2 review this spring — but the trend line worries merchants who bought Postscript partly for the service.

Maestra

Maestra doesn’t hand you a support queue — it hands you people. Every account gets a dedicated Forward Deployed Marketer (larger accounts get two) with 5-minute response times, four strategy meetings a month, and a shared Slack channel, and migration is handled by Maestra’s team, which puts its own share of the work at 99%. The job isn’t closing tickets — it’s anticipating needs, spotting pain points, and building custom solutions, sometimes for problems outside Maestra’s own remit.

Kyle Cannon

Digital Marketing Manager at Furniture Fair

Maestra isn’t just a vendor—they’re part of my team.

With two dedicated Maestra marketers who communicate with me daily via Slack, we move at a pace I haven’t seen anywhere else. It’s not just about fulfilling requests—it’s about anticipating needs, identifying pain points, and proactively creating custom solutions.

There’s no tier where service gets good — it starts included. That’s a structural answer to both Attentive’s tiered attention and Postscript’s support drift.

Pricing

Pricing winner: Postscript — the lowest, fully self-serve entry, with every tier rate published up front.

Attentive

Attentive: Custom pricing (contact sales). No numbers are published; plans are built from channel bundles plus AI add-ons. Third-party estimates put typical spend around a $300–$500/mo platform fee, roughly $0.01 per SMS, and quarterly spend minimums of $2,000–$3,000 on 6–12 month contracts — estimates, not official rates.

The contract mechanics are the loudest complaint theme. “They buried a 12 month auto renewal into our contract. We believed we were month to month after the initial 12 month term. We were not,” one customer reported in April. Carrier fees pass through on top — a reviewer this spring wrote they “nearly double the real monthly cost.” Attentive’s subscription agreement states fees are non-cancellable and non-refundable.

Postscript

Postscript: $0/mo platform fee with a $49 monthly minimum spend on Starter (SMS $0.015); Growth is $100/mo (SMS $0.01) and Professional $500/mo (SMS $0.007), all plus pass-through carrier fees. A toll-free number is free on every plan; short codes run $750/mo through carriers.

The transparency is real, with two caveats from recent reviews: the “free” Starter tier bills its $49 minimum even in silent months, and merchants on negotiated terms report annual contracts that renew quietly and aren’t visible in platform billing.

Maestra

Maestra is just as transparent, and adds a service layer the other two don’t. Pricing is published — from $2,990/mo for 150,000 profiles, with per-message rates listed too (US SMS from $0.0045, MMS from $0.0125, RCS from $0.0058) — and billing is month-to-month with no lock-in. Every account also gets a full, itemized billing breakdown, so you can see exactly where the money goes and sit down with your dedicated Forward Deployed Marketer to find where to trim it. Migration, implementation, and ongoing optimization come included at no extra cost.

The comparison isn’t sticker price — it’s stack price. A brand running Attentive or Postscript typically also pays for an email platform, a loyalty app, and a popup tool; Maestra’s subscription replaces that whole set, which is how UAG’s consolidation reached $100,000 in annual savings.

Choosing Between Attentive, Postscript, and Maestra

Choose Attentive if you’re an enterprise brand sending millions of texts, compliance exposure is a board-level topic, and you want a managed partner with the deepest legal-defense tooling in SMS. Go in with a lawyer’s eye on the renewal clause and quarterly minimums.

Choose Postscript if you’re a Shopify-exclusive brand selling to US and Canadian customers, you want published rates and monthly flexibility, and SMS is a dedicated channel worth specialist tooling — Infinity Testing and human SMS Sales are genuinely unique. Budget separately for email, loyalty, and popups.

Choose Maestra if you’re a mid-size, enterprise, or rapidly scaling brand where SMS is one of several channels that should share one customer profile. Maestra replaces three to five point tools — SMS, email, loyalty, popups, site personalization — with one platform, one bill, and a dedicated team doing migration and optimization — the consolidation math behind UAG’s $100,000-a-year stack savings. Book a demo and price the consolidated version of your stack.