Postscript
Postscript: A Shopify-focused SMS platform with automation, segmentation, and two-way commerce messaging. Ranked #20 of 50 in SMS Marketing Software by our editors (7.2/10); pricing: 30-day trial; best for shopify stores focused on SMS commerce automation.
At a glance
- Editor score7.2 / 10
- Pricing30-day trial
- Best forShopify stores focused on SMS commerce automation
- Free planNo
- Paid from$100/mo
- Facts checked21 Sep 2026
Where it wins
- Visual flows, behavior triggers, and multi-step automations
- Shopify-based segmentation and broad subscriber acquisition tools
- Two-way messaging with compliance and performance reporting
Where it doesn't
- Starter requires a $49 monthly minimum spend
- Professional API access begins at $500 per month
- Enterprise pricing is custom rather than published
Our verdict on Postscript
Postscript is an SMS marketing platform for ecommerce brands, with a particular focus on Shopify merchants. It combines SMS and MMS campaigns with visual automation flows, behavior-based triggers, audience segmentation, subscriber acquisition, two-way messaging, analytics, and compliance safeguards. Its acquisition options include popups, checkout collection, landing pages, keywords, QR codes, and back-in-stock alerts. Shopify stores that want to connect promotional messaging with commerce activity are the clearest fit, while businesses seeking a general-purpose messaging platform may find its ecommerce orientation less relevant.
Pricing is structured around monthly spend and feature tiers. The Starter plan displays $0 per month but requires a $49 monthly minimum spend and includes campaigns and automations, unlimited segments, a dedicated toll-free number, and two opt-in keywords. Growth costs $100 per month and adds unlimited opt-in keywords plus live chat and email support. Professional costs $500 per month and adds enhanced analytics, priority live chat and email support, and API access for custom integrations. Enterprise uses custom pricing and includes an Onboarding Launch Specialist, custom product recommendations, and Data Warehouse Push. A 30-day trial provides an evaluation period, but the published plans do not provide a no-cost operating tier.
Postscript’s ecosystem fit is strongest for Shopify-centered teams. Integrations include Klaviyo, Gorgias, Recharge, Daasity, Okendo, Wonderment, and Amped, while custom integrations are supported through the Professional plan’s API access. Reporting includes messaging performance analytics, custom attribution windows, and UTM parameters, giving commerce teams ways to connect campaigns with tracked outcomes. Compliance features include opt-out detection and safeguards, and two-way messaging supports response management rather than broadcast-only communication. Choose Postscript if Shopify segmentation, acquisition tools, automated flows, and conversational SMS are central requirements. Consider an alternative if a lower-cost entry plan, published Enterprise pricing, or a platform outside the Shopify ecosystem is the priority.
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Postscript pricing
All 4 Postscript plans and prices →
Postscript fact sheet
| Free plan | No |
|---|---|
| Paid from | $100/mo |
| Subscriber limit | Not verified |
| Message limit | Not verified |
| Workflow automation | Yes |
| Audience segmentation | Yes |
| MMS support | Yes |
| Inbound messaging | Yes |
| Compliance tools | Yes |
| Free trial | 30 days |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Live chat, Tickets, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 11 integrations: Shopify, Klaviyo, Mailchimp, Omnisend, Gorgias, Zendesk … See all → |
| Pricing | 30-day trial (source) |
| Website | postscript.io |
| Facts checked | 21 Sep 2026 |
Postscript integrations
Postscript lists 11 integrations on its own site.
- Shopify
- Klaviyo
- Mailchimp
- Omnisend
- Gorgias
- Zendesk
- Kustomer
- Re:amaze
- Zapier
- Triple Whale
- Northbeam
See all Postscript integrations →
Alternatives to Postscript
- Sinch EngageA broad messaging platform for teams that need automation, APIs and multichannel reach.9.4
- KlaviyoA strong fit for ecommerce teams that want SMS alongside deep email data.9.2
- CM.com CampaignsA free, web-based campaign tool with automation, analytics, and broad messaging support.9.0
See all Postscript alternatives →
Also Ranked In
Postscript is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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