Postscript

What Postscript does

Postscript is an SMS-first marketing and conversational commerce platform purpose-built for Shopify-based direct-to-consumer ecommerce brands. Founded in 2018 and headquartered in Scottsdale, Arizona, the company serves 20,000+ Shopify merchants with a stack that includes a visual Flow Builder (65+ event triggers and 45+ behavioral filters), a proprietary Onsite Opt-in Network spanning 130M+ recognized subscribers, and the Postscript AI suite (Brand Center, Infinity Testing, Shopper AI Shopping Assistant, and Conversation Insights). The platform runs on Twilio infrastructure under a preferred-partner relationship that provides 3x more sending bandwidth and 90% lower latency, supporting 97.6% (TFN) and 99.9% (DSC) U.S./Canada deliverability and 100% uptime during BFCM 2024. Compliance is hard-wired into the product via TCPA guardrails (Quiet Hours, opt-out traps), an in-house legal team, a TCPA Defense Force partnership, and Postscript's co-founding role in the Ecommerce Innovation Alliance (EIA), which filed a Quiet Hours petition with the FCC accepted for public comment in 2025.

The company monetizes through tiered SaaS subscriptions (Starter freemium with $49 monthly minimum, Growth at $100/mo, Professional at $500/mo, and custom Enterprise) layered with usage-based per-message fees ($0.007–$0.015/SMS, $0.024–$0.045/MMS) plus pass-through carrier fees. Additional revenue streams include Postscript Plus managed services (Launch, Essentials, and Signature tiers with dedicated SMS strategists), the Postscript AI add-on bundle, Fondue CashBack (a performance-based coupon alternative via the getfondue.com sub-brand), and partner referral commissions at 10% for 12 months via PartnerStack. Go-to-market is multi-motion: product-led growth via the Shopify App Store (1,900+ five-star reviews) with a 30-day $100-credit free trial, inside sales for mid-market via Book-a-Demo CTAs, and a higher-touch field-sales/managed-service motion through Postscript Plus for enterprise brands. Shopify's April 2026 developer-ecosystem profile described Postscript as a $100 million SMS marketing company; the firm is venture-backed across four rounds totaling approximately $106M, including a $65M Series C closed in June 2022 led by 01 Advisors with participation from Greylock, OpenView, and Twilio.

Name

Postscript

Legal name

Postscript

Website

https://postscript.io

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

251–500 employees

Short description

Postscript is an SMS-first marketing and conversational commerce platform purpose-built for Shopify ecommerce brands. It serves 20,000+ DTC merchants with AI-driven list growth, two-way messaging, Shopper AI assistant, and optional managed services, backed by Twilio infrastructure and EIA-led TCPA advocacy.

Ownership category

akta.pro rank

Product category

SMS Marketing Software

NAICS

Advertising, Public Relations, and Related Services (5418)

SIC

Services-Advertising (7310)

akta.pro primary industry

Social Commerce & Livestream Shopping Platforms (BPAMAGAJ)

Keywords

• SMS marketing platform
• Conversational commerce software
• Ecommerce messaging platform
• AI shopping assistant
• Mobile marketing automation

Headquarters

HQ city

Scottsdale

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Marketing or Sales, Personnel, Infrastructure, Operations, Supply Chain

Revenue model

1. SaaS Subscription Plans: Tiered monthly subscriptions: Starter ($0/mo + $49 minimum), Growth ($100/mo), Professional ($500/mo, Most Popular), and Enterprise (custom). Plans bundle core platform features and include a per-month minimum spend on messaging.
2. Usage-Based Messaging Fees: Per-message charges on top of subscription tiers: SMS ($0.009–$0.015) and MMS ($0.024–$0.045) plus pass-through US carrier fees (~$0.00418 SMS, ~$0.00841 MMS). Pricing scales down at higher tiers.
3. Postscript Plus Managed Services: Premium managed-service add-on providing dedicated SMS strategists and full-service SMS program management across Launch, Essentials, and Signature tiers.
4. Partner Referral Commissions: Affiliate/referral revenue through the PartnerStack-powered partner program, paying 10% commission per month for the first 12 months on referred brand accounts.
5. Postscript AI Add-on Bundle: AI tier bundling Brand Center, Infinity Testing, Shopper, and Conversation Insights as a paid add-on to the core SMS Marketing subscription.
6. Fondue CashBack Add-on: Performance-based CashBack coupon alternative (via subsidiary getfondue.com) where merchants pay out only when incentives are redeemed.

Pricing tiers

Go-to-market motion6 records

Distribution channels7 records

Marketing channels11 records

Core offering

Postscript is an SMS-first marketing and conversational commerce platform purpose-built for Shopify ecommerce brands. It combines subscriber list growth (popups, Onsite Opt-in, keywords, checkout collection, QR codes), segmentation, AI-driven campaign and automation tools, two-way conversational messaging, and a managed-service layer. Layered on top are Postscript AI (Brand Center, Infinity Testing, Shopper, Conversation Insights), Postscript Plus managed services, Postscript RCS rich messaging, and the Fondue CashBack coupon sub-brand.

Product overview

Postscript operates a focused, SMS-first platform-plus-modules architecture built specifically for Shopify ecommerce brands. The core product is Postscript SMS Marketing, providing list growth, segmentation, campaigns, automations, two-way messaging, and analytics. Layered on top are several modules: Postscript Plus (managed services with in-house strategists across Launch/Essentials/Signature tiers), the Postscript AI suite (comprising Brand Center, Infinity Testing, Shopper, and Conversation Insights), Postscript RCS (rich messaging), the Onsite Opt-in list growth suite, and Fondue CashBack (coupon alternative sub-brand). Supporting infrastructure includes a developer-facing API/SDK, a proprietary Subscriber LTV analytics framework, and a Compliance & Deliverability suite backed by Twilio infrastructure. The portfolio is tightly integrated, with Postscript Plus and Postscript AI directly extending the SMS Marketing core.

Differentiator

Problem solved

Functional benefit

Brands

• Postscript Plus: Managed SMS marketing service combining Postscript's AI-powered messaging platform with in-house strategists to maximize revenue from SMS.
• Postscript AI
• Shopper
• Fondue

Products and services

• Postscript SMS Marketing Flagship SMS marketing platform purpose-built for Shopify ecommerce brands. Enables subscriber list growth (popups, Onsite Opt-in, checkout collection, keywords, QR codes), segmentation, campaign sends, automated and behavioral SMS flows, two-way conversational messaging, and analytics. Reported to drive a 34x average ROI on SMS spend.
• Postscript Plus Premium managed SMS marketing service combining Postscript's SMS platform with dedicated in-house strategists. Available in Launch, Essentials, and Signature tiers, providing list growth strategy, automation audits, and conversational Shopper support for brands making SMS their primary revenue channel.
• Postscript AI Suite of revenue-driving AI features for marketers sold as a paid add-on to the SMS Marketing core. Bundles Brand Center (brand voice training), Infinity Testing (AI multivariate SMS copy optimization), Shopper (AI shopping assistant), and Conversation Insights (NLP-driven conversation analytics).
• Shopper Always-on AI shopping assistant for SMS that engages every subscriber in 1:1 personalized conversations, answers product questions, makes recommendations, and drives sales in the brand's voice. Responds within one minute and is positioned to scale conversational shopping without expanding headcount.
• Postscript RCS Rich Communication Services (RCS) messaging offering enabling brands to send rich messages from a branded profile for higher engagement and conversion versus standard SMS.
• Fondue CashBack Smart CashBack coupon alternative offered as a popup conversion driver and incentive for SMS list growth and offer optimization. Operated as a sub-brand at getfondue.com and reported to increase Welcome Series revenue by 37% when integrated.
• Postscript API & SDK Developer-facing API and SDK enabling custom integrations, Data Warehouse Pushes, and deployment of Postscript popups, opt-in checkbox, and TCPA-compliant language on non-Shopify and headless ecommerce stores. Available on the Professional plan and above.

Quantifiable outcome

• 34x Return on Investment on SMS Spend (average across Postscript brands)
• +14 more outcomes

Named customers41 records

Segments10 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

AI capability10 records

Feature9 records

Partnerships

Ten partnerships are on record, tiered core and flagship.

• TiecoreTechnology or Integration · 1 March 2026Postscript and Tie launched an integration enabling ecommerce brands to trigger 41% more SMS abandonment automations by matching anonymous website visitors to opted-in SMS subscribers using Tie's identity graph; solves cookie-blocking and cross-device tracking issues. Beta customers saw a 44% lift in SMS send volume on browse abandonment automations; Portland Leather Goods cited a 16% increase in abandonment revenue.
• ShopifyflagshipStrategic or Co-development PartnerPostscript is a Shopify Plus Certified partner with deep integration into the Shopify ecosystem; one of the most successful apps in Shopify's $1.3B+ developer ecosystem, profiled by Shopify as a $100M SMS marketing company serving 20,000+ Shopify brands. Product features (Onsite Opt-in, Checkout collection, Short codes) are purpose-built around Shopify Plus.
• TwilioflagshipStrategic or Co-development PartnerPostscript holds a preferred-partner relationship with Twilio, providing 3x more sending bandwidth and 90% less sending latency; enables 100% uptime during BFCM 2024. Joint engineering powers real-time visibility into carrier queues to proactively address deliverability issues.
• Ecommerce Innovation Alliance (EIA)coreStrategic or Co-development PartnerPostscript co-founded the EIA and offers free sponsored EIA memberships to all customers. The EIA filed a petition with the FCC to stop frivolous Quiet Hours lawsuits (accepted for public comment in 2025). Provides expert guidance and regulatory alerts to members.
• TCPA Defense ForcecoreStrategic or Co-development PartnerPartnership that gives Postscript customers access to a network of TCPA litigators with pre-negotiated discounted rates; helps Postscript track industry regulations, proactively notify customers, and answer compliance questions.
• GorgiascoreTechnology or IntegrationDirect integration with Gorgias helpdesk; appears on Postscript's partners page and integrations list, enabling brands to connect SMS responses to their support workflows.
• ZendeskcoreTechnology or IntegrationFeatured integration enabling brands to route SMS responses into Zendesk for unified customer support.
• KlaviyocoreTechnology or IntegrationListed integration allowing data sharing and cross-channel orchestration between Postscript SMS and Klaviyo email; commonly co-deployed by ecommerce brands.
• ReChargecoreTechnology or IntegrationFeatured integration supporting subscription-management SMS automations and trigger events for ReCharge-powered subscriptions.
• PartnerStackcoreTechnology or IntegrationPartnerStack powers Postscript's Partner Program — handling applications, referral links, and 10% commission payouts for the first 12 months on referred brand accounts.

Scale indicators15 records

Recent moves6 records

Expansion highlights7 records

Broad incumbents

• Braze: Braze is an enterprise customer engagement platform with SMS, email, push, and in-app messaging. It overlaps with Postscript's Enterprise tier and Postscript Plus for large DTC and retail brands running lifecycle messaging across channels.
• HubSpot: HubSpot is a broad CRM and marketing-automation suite with SMS Marketing Hub. It competes indirectly by offering SMB ecommerce brands a single vendor for email, CRM, and SMS — putting pricing pressure on Postscript's Starter and Growth tiers.
• ActiveCampaign: ActiveCampaign is an SMB/mid-market email-first automation platform with native SMS. It is a comparable alternative for smaller Shopify brands that prefer an integrated email+SMS suite over a standalone SMS specialist.
• Iterable: Iterable is a cross-channel marketing platform with SMS, email, and push for mid-market and enterprise ecommerce and consumer brands. It overlaps with Postscript at the upper end of the market where brands run orchestrated multi-channel campaigns.
• Klaviyo: Klaviyo is the email-first incumbent for Shopify ecommerce and has built a strong native SMS offering that bundles email + SMS + reviews. It competes head-to-head with Postscript in mid-market and enterprise Shopify and represents the dominant all-in-one threat.

Others

• Twilio: Twilio is Postscript's underlying messaging infrastructure provider and preferred partner, supplying 3x more sending bandwidth and 90% lower latency. As a key technology partner (and a Series C investor), Twilio is comparable as the SMS backbone Postscript builds on rather than a direct competitor.
• Shopify: Shopify is Postscript's primary distribution channel and ecosystem partner (Shopify Plus Certified). It is comparable as the platform host — and potential competitive threat — for ecommerce SMS marketing rather than as a peer product.

Direct peers

• Attentive: Attentive is an SMS-first marketing platform serving many of the same DTC/Shopify brands (e.g., Steve Madden, Urban Outfitters). It is the closest direct competitor with comparable AI-driven personalization, two-way messaging, and Shopify Plus integration.
• Sendlane: Sendlane is a smaller ecommerce-focused marketing platform with email, SMS, and behavior-based automation. It directly competes with Postscript for Shopify brands in the SMB-to-mid-market segment and shares the SMS + email positioning.

Emerging players

• Tidio: Tidio is an SMB-focused conversational platform combining live chat, chatbots, and SMS for Shopify merchants. It overlaps with Postscript at the small/SMB end, particularly where conversational support and lightweight SMS are bundled together.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat7 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/postscriptio
• YouTubeyoutube.com/@postscript
• LinkedInlinkedin.com/company/postscriptio
• Facebookfacebook.com/Postscript-280416719419543

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds4 records

Investors18 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Postscript