Postscript

Web · API· paid plans from $100/mo

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Postscript is ranked #8 of 51 in SMS marketing software on Freedom251. It runs on API, Web. There is a free plan. A free trial is offered. Paid plans start at $100/mo.

Postscript plans and pricing

All plans

Starter Free $0/mo.; $49 monthly minimum spend; $0.009/SMS, $0.045/MMS + Carrier fees* Campaigns and automations · Unlimited segments · Dedicated toll-free number · 2 opt-in Keywords postscript.io · 9 Oct 2026

Growth $100/mo $100/mo.; $0.008/SMS, $0.03/MMS + Carrier fees* Starter features · Unlimited opt-in Keywords · Live chat and email support postscript.io · 9 Oct 2026

Professional $500/mo $500/mo.; $0.007/SMS, $0.024/MMS + Carrier fees* Growth features · Enhanced Analytics · Priority live chat/email support · API access for custom integrations postscript.io · 9 Oct 2026

Postscript AI Plan $699/mo $699/mo.; Per Message Rates: $0.003 – $0.30 (depending on the product and message type) Brand Center · Infinity Testing · Shopper postscript.io · 9 Oct 2026

Enterprise Contact us for custom pricing Professional features · Dedicated Customer Success Manager · Data Warehouse Push · Option to add RCS postscript.io · 9 Oct 2026

Compared on SMS marketing software

Free plan: No
Paid from: $49/mo
MMS support: Yes
Workflow automation: Yes

Best Postscript alternatives

See all 20

Two bars CallHub Free tier No. 1$0.05/mo6.7 One bar Textmagic No. 2$0.05/mo6.5 No signal Attentive No. 36.4 One bar Blazon Free tier No. 4ZAR 285/mo6.4 No signal CallFire IVR No. 5$99/mo6.4 One bar Klaviyo Free tier No. 6Free6.4

The record

Product: Postscript describes itself as an agentic retention marketing platform across SMS, RCS, email, and future channels.
Audience: Postscript says it helps ecommerce brands design and operate SMS programs that engage customers and drive revenue.
AI context: Its Agentic Context Platform stores brand and customer context so AI agents can act at the individual subscriber level, and the homepage says it is included with every plan at no extra cost.
Messaging tools: All marketing plans include a visual flow builder with automation templates, subscriber acquisition tools, segmentation, analytics, response management, and custom attribution windows.
AI products: The Postscript AI Plan includes Brand Center controls for message tone and brand knowledge, Infinity Testing for message variants, and Shopper for personalized journeys.
Integrations: Postscript's integration directory groups connections into categories including ecommerce platforms, email, customer support, loyalty, reviews, analytics, and workflow automation.
Platform API: Professional pricing lists API access for custom integrations, and Postscript provides developer documentation for its API, JavaScript SDK, and webhooks.
Security and compliance: Postscript says its features and list-growth tools are built to follow TCPA, mobile carrier, and other regulatory guidelines.
Subscriber privacy: Postscript's help documentation says shops can submit subscriber deletion and access requests, with API-based requests available on Professional and Enterprise plans.
Support: Customer Experience Advocates provide live chat Monday–Friday from 6am PT to 5pm PT and email support; Professional and Enterprise plans include dedicated onboarding and priority support.
Pricing limits: The listed messaging rates apply to the United States 50 states and Canada, with carrier fees added; a dedicated short code is listed at $750/month through carriers.
Trial: Postscript says a free trial includes $100 in credit usable during the first 30 days, after which or when exhausted additional messages are charged at the Free package rate unless another package is selected.
Price from: $100/mo

Where it ranks on Freedom251

Best SMS Marketing Software in 2026#8 of 51
Best Business Text Messaging Software in 2026#3 of 30
Best Messenger Marketing Software in 2026#10 of 28

Is Postscript yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Postscript

Sources

postscript.io· checked 9 Oct 2026
postscript.io/about-us· checked 9 Oct 2026
postscript.io/pricing· checked 9 Oct 2026
postscript.io/integrations· checked 9 Oct 2026
help.postscript.io/en/articles/13563839-managing-data-subj· checked 9 Oct 2026
postscript.io/customer-service· checked 9 Oct 2026