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Postscript
What it is
Postscript is a retention marketing platform for ecommerce brands using SMS, RCS, email, and future channels. Marketing plans include a visual flow builder, automation templates, subscriber acquisition tools, segmentation, analytics, response management, and custom attribution windows. Its Agentic Context Platform stores brand and subscriber context for AI agents and is included with every plan at no extra cost. The Postscript AI Plan adds Brand Center controls for message tone and brand knowledge, Infinity Testing for message variants, and Shopper personalized journeys. Integrations cover ecommerce, email, customer support, loyalty, reviews, analytics, and workflow automation. Professional pricing includes API access, with documentation for the API, JavaScript SDK, and webhooks. Postscript describes compliance with TCPA, mobile carrier, and other regulatory guidelines. Subscriber deletion and access requests can be submitted, including through APIs on Professional and Enterprise plans. Starter is $0/mo. with a $49 monthly minimum spend; other listed plans are $100/mo., $500/mo., and $699/mo.
For and against
For
- Visual flow builder and automation templates
- Segmentation, analytics, and response management
- AI context included with every plan
- API access on Professional
- Free trial includes $100 credit for 30 days
Against
- Starter has a $49 monthly minimum spend
- Carrier fees are added to messaging rates
- Dedicated short code costs $750/month
- Additional messages can be charged after trial credit
The verdict
Postscript offers a broad messaging workflow for ecommerce retention, with plans spanning free entry, API access, and AI features. Review minimum spend, carrier fees, and trial-credit terms before choosing a plan.
Who it suits
Postscript suits ecommerce brands building SMS and other messaging programs with automation, segmentation, analytics, and response handling. Teams needing API integrations or AI-oriented messaging tools can select plans that list those capabilities.
Plans and prices
Starter
Campaigns and automations · Unlimited segments · Dedicated toll-free number · 2 opt-in Keywords
Read 9 Oct 2026 · postscript.io
Growth
Starter features · Unlimited opt-in Keywords · Live chat and email support
Read 9 Oct 2026 · postscript.io
Professional
Growth features · Enhanced Analytics · Priority live chat/email support · API access for custom integrations
Read 9 Oct 2026 · postscript.io
Postscript AI Plan
Brand Center · Infinity Testing · Shopper
Read 9 Oct 2026 · postscript.io
Enterprise
Professional features · Dedicated Customer Success Manager · Data Warehouse Push · Option to add RCS
Read 9 Oct 2026 · postscript.io
On the record
- 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.postscript.io · read 9 Oct 2026
- 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.postscript.io · read 9 Oct 2026
- Audience
- Postscript says it helps ecommerce brands design and operate SMS programs that engage customers and drive revenue.postscript.io · read 9 Oct 2026
- Integrations
- Postscript's integration directory groups connections into categories including ecommerce platforms, email, customer support, loyalty, reviews, analytics, and workflow automation.postscript.io · read 9 Oct 2026
- Messaging tools
- All marketing plans include a visual flow builder with automation templates, subscriber acquisition tools, segmentation, analytics, response management, and custom attribution windows.postscript.io · read 9 Oct 2026
- Platform API
- Professional pricing lists API access for custom integrations, and Postscript provides developer documentation for its API, JavaScript SDK, and webhooks.postscript.io · read 9 Oct 2026
- 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.postscript.io · read 9 Oct 2026
- Product
- Postscript describes itself as an agentic retention marketing platform across SMS, RCS, email, and future channels.postscript.io · read 9 Oct 2026
- Security and compliance
- Postscript says its features and list-growth tools are built to follow TCPA, mobile carrier, and other regulatory guidelines.postscript.io · read 9 Oct 2026
- 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.help.postscript.io · read 9 Oct 2026
- 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.postscript.io · read 9 Oct 2026
- 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.postscript.io · read 9 Oct 2026
