Customer.io

What Customer.io does

Customer.io (Peaberry Software, Inc.) is a privately held, venture-backed customer engagement software company headquartered in Beaverton, Oregon (with offices in Portland and New York), founded in 2012 and operating at 251–500 employees. It sells a unified SaaS platform that combines first-party data ingestion, real-time behavioral segmentation, cross-channel messaging orchestration, and an embedded AI Agent into a single workflow layer. The product surface comprises interconnected modules — Journeys (visual workflow builder with branching logic and LLM Actions), Audiences (real-time segmentation, identity resolution, ad audience sync), Data & integrations (reverse ETL / Data Pipelines with US and EU data residency), Design Studio (Parcel-based visual and code email editor with accessibility and spam checks), Analytics (revenue attribution, A/B and cohort testing), and the AI Agent (persistent-memory intelligence layer) — supported by SDKs, a public API, webhooks, and a Model Context Protocol (MCP) server for agentic tool interoperability. Channels span email, push notifications, in-app messages, SMS (via Twilio), and WhatsApp, with the platform reporting 100B+ messages and 60B+ webhooks in 2025, 99.98% uptime, and 99% customer satisfaction.

The company serves roughly 9,000+ brands globally, with named customers spanning enterprise (Notion, IMAX, Lemonade, Mailgun, Mapbox, Mixpanel, Segment, PillPack/Amazon, Angi, ZEN.COM), mid-market (Buffer, Monarch Money, Descript, Attio, Codecademy, Studocu, BallerTV, Bamboo, Pawp), and startup (Cursor, Lovable, Wispr Flow, vibe.co, billie). Revenue comes primarily from tiered subscription SaaS (Essentials at $100/month, Premium at $1,000/year entry, and quote-based Enterprise multi-year contracts) supplemented by usage-based overages (additional profiles, emails, and $10 per 100K AI credits), a freemium 14-day trial with no credit card, a 12-month free Startup Program for companies raised under $10M, and indirect channel revenue via agency partners and Google Cloud marketplace. Distribution is hybrid: product-led self-serve for Essentials plus a demo-driven, sales-assisted motion for Premium and Enterprise, supported by dedicated Customer Success Managers, Technical Implementation Specialists, and a 90-day onboarding program. Strategic milestones include a $5M crowdfunding round on Republic in August 2021, a Series A led by Spectrum Equity in March 2022, and the August 2022 acquisition of Parcel; ongoing investment is directed at the AI Agent, MCP interoperability, and additional messaging channels. The platform is SOC 2 Type II, GDPR, HIPAA, and CCPA compliant, with EU-U.S., UK Extension, and Swiss-U.S. Data Privacy Framework certifications supporting regulated and enterprise adoption.

Name

Customer.io

Legal name

Peaberry Software Inc.

Website

https://customer.io

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

101–250 employees

Short description

Customer.io provides a unified customer engagement platform combining first-party data, cross-channel messaging (email, push, in-app, SMS, WhatsApp), and an AI Agent, serving 9,000+ brands globally via tiered SaaS pricing from $100/month Essentials to quote-based Enterprise contracts.

Ownership category

akta.pro rank

Product category

Customer Engagement Platform

NAICS

Advertising Agencies (541810), Custom Computer Programming Services (541511), Direct Mail Advertising (541860)

SIC

Services-Computer Programming Services (7371), Services-Prepackaged Software (7372), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Marketing Automation Platforms & Services (BPAFAFAC)

akta.pro secondary industries

Software/SaaS Subscriptions (Consumer & Prosumer) (CRAFAIAB), Digital Goods, Subscriptions & Gift Card Marketplaces (BPAMAGAG)

Keywords

• Customer engagement platform
• Marketing automation software
• Customer data platform
• Lifecycle messaging software
• Behavioral segmentation tools

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Subscription SaaS fees (Essentials, Premium, Enterprise tiers): Tiered recurring subscription plans (Essentials monthly billing; Premium and Enterprise annual billing) based on profile volume, email volume, channels, and features included.
2. Usage-based overages (profiles, emails, AI credits): Usage charges on top of subscription: $0.009 per additional people/object profile, $0.12 per additional 1,000 emails, and $10 per 100K additional AI credits. SMS volume is also custom-priced by usage.
3. Startup Program (freemium / promotional credits): 12 months free for early-stage companies raised under $10M, plus Promotional Credit Terms governing issued credits.
4. Agency partner and Google Cloud marketplace resales: Indirect channel revenue via agency partners and ability to purchase Customer.io through Google Cloud credits.

Pricing tiers

Go-to-market motion5 records

Distribution channels5 records

Marketing channels11 records

Core offering

Customer.io is a unified customer engagement platform that turns first-party behavioral data into personalized cross-channel messaging across email, push, in-app, SMS, and WhatsApp. It combines real-time segmentation, a visual Journeys workflow builder, a Parcel-based Design Studio, Data Pipelines (reverse ETL) and integrations, revenue attribution analytics, and an AI Agent with persistent memory for end-to-end campaign execution. The platform is sold via tiered SaaS subscriptions (Essentials, Premium, Enterprise) with usage-based overages, a 14-day free trial, and a 12-month-free Startup Program.

Product overview

Customer.io offers a single, unified customer engagement platform (not a multi-product portfolio) that integrates data, messaging, and AI into a single orchestration layer, composed of several interconnected modules that share the same underlying profile, event, and segmentation model. The core platform encompasses Journeys (cross-channel campaign orchestration with a visual workflow builder and LLM Actions), Audiences (real-time data-driven segmentation and ad audience sync), Data & integrations (a Customer Data Platform with reverse ETL and pre-built connectors), Design Studio (email and message content creation with drag-and-drop and code editors), Analytics (revenue attribution, A/B testing, and AI-powered insights), and the AI Agent (a unified intelligence layer with persistent memory that executes end-to-end tasks across all modules). Supporting features include Email Marketing, In-App Messages, Push Notifications, SMS Marketing, WhatsApp Marketing, Webhooks, Custom Objects, Anonymous Messages, Data Activation, Data Warehouse destinations, and the acquired Parcel email coding platform. The modules share common capabilities like a global people/universal profile, unlimited behavioral conditions, US/EU data residency, and MCP/API/webhook extensibility, allowing teams to launch campaigns faster and adapt without limits.

Differentiator

Problem solved

Functional benefit

Products and services

• Customer.io Platform
• Journeys Visual workflow builder for creating data-driven cross-channel campaigns across email, push, in-app, SMS, and webhooks, with branching logic, multivariate testing, send-time optimization, and LLM Actions.
• Audiences Data-driven segmentation engine using real-time customer data and unlimited behavioral conditions for recipient lists, campaign triggers, filters, and conversion goals, including AI-powered segment builder and ad audience sync to Meta and Google.
• Data & Integrations (Data Pipelines) Customer Data Platform that unifies, enriches, and activates customer data via reverse ETL, pre-built integrations, APIs, SDKs, webhooks, data replay, detailed event logs, and US/EU data center residency.
• Design Studio Email and message content creation environment combining drag-and-drop visual tools and a developer code editor, with Global Styles, reusable components, version control, MJML support, integrated accessibility checks, and AI-assisted styling and translation.
• Analytics Revenue attribution, A/B and cohort testing, conversion goals, deliverability and workspace health monitoring, dashboards, and AI-powered performance analysis with deduplicated people-based tracking.
• AI Agent Cross-platform AI intelligence layer with persistent memory of brand voice, goals, and preferences that builds campaigns, analyzes performance, and drafts improvements from a single conversation; available in beta with Standard, Elevated, or Custom session limits by tier.
• Parcel Email Coding Platform Email coding platform acquired in August 2022 and integrated as the default email editor in Customer.io, offering a design system approach, collaboration tools, and an expanded free plan to support email creators.

Quantifiable outcome

• Buffer: 28% increase in click-through rates and 22% increase in email conversion rates
• +7 more outcomes

Named customers52 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration19 records

AI capability12 records

Feature8 records

Partnerships

18 partnerships are on record, tiered flagship and core.

• ParcelflagshipStrategic or Co-development Partner · 23 August 2022Customer.io acquired Parcel in August 2022. Parcel's coding platform for creating emails was integrated as the default email editor inside Customer.io, bringing design-system and collaboration features to email development, plus an expanded free plan for email creators.
• Amazon S3coreTechnology or IntegrationFeatured integration that streams Customer.io data (messages, people, metrics) into Amazon S3 storage for downstream analytics.
• AmplitudecoreTechnology or IntegrationFeatured integration combining Amplitude's product analytics data with Customer.io user and analytics data to enhance audience insights.
• SalesforceflagshipTechnology or IntegrationFeatured integration syncing customer data and triggering personalized campaigns based on sales activities, deal stages, and CRM updates across sales and marketing funnels.
• Facebook Lead AdscoreTechnology or IntegrationFeatured integration syncing Customer.io data with Facebook campaigns to convert leads to customers.
• Google AdsflagshipTechnology or IntegrationFeatured integration that automatically exports Customer.io segments as audiences for Google's ad networks, including lookalike and retargeting campaigns.
• MixpanelcoreTechnology or IntegrationFeatured integration leveraging Mixpanel analytics in combination with user and analytics data in Customer.io for deeper audience behavior understanding.
• SnowflakeflagshipTechnology or IntegrationFeatured integration transferring Customer.io data (messages, people, metrics) into Snowflake via Amazon S3 or Google Cloud Project storage for warehouse analytics.
• TwilioflagshipTechnology or IntegrationFeatured integration enabling Twilio's SMS action within Customer.io for seamless customer communications.
• TypeformcoreTechnology or IntegrationFeatured integration connecting Typeform forms to Customer.io workspaces to add people automatically and trigger campaigns based on form submissions.
• SegmentflagshipTechnology or IntegrationFeatured integration functioning as both destination and source, filtering and mapping event and attribute data through Segment.
• HubSpotflagshipTechnology or IntegrationFeatured integration connecting HubSpot CRM data to Customer.io for targeted messaging based on contact properties, deal progression, and marketing interactions.
• ZapiercoreTechnology or IntegrationFeatured integration enabling automation of Customer.io with apps like Webflow and Typeform for form submissions, lead management, and CRM updates.
• Google CloudcoreOEM/ Whitelabel/ Licensing PartnerCustomer.io is available for purchase using existing Google Cloud credits via a dedicated landing page, providing an additional procurement channel.
• Blackbird PPCcoreGTM or Marketing PartnerSan Francisco-based marketing agency that won its second consecutive B2B PPC award from Search Engine Land for its work with Customer.io (previously with Corelight). Approach integrates MMM and first-party data.
• Twilio (subprocessor)coreOthersListed as a subprocessor in the Privacy Policy for sharing customer end-user information for third-party messaging.
• StripecoreOthersListed as a third-party business application subprocessor for payment processing referenced in the Privacy Policy.
• ApplecoreOthersListed as a third-party messaging application subprocessor for push notifications referenced in the Privacy Policy.

Scale indicators11 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Braze: Braze is a public cross-channel customer engagement platform that competes directly with Customer.io in email, push, in-app, and SMS orchestration for SaaS and consumer brands. Like Customer.io, Braze emphasizes real-time behavioral segmentation, API-first architecture, and AI-driven journey orchestration.
• Iterable: Iterable is a direct cross-channel marketing automation competitor that serves mid-market and enterprise B2C brands with email, push, SMS, and in-app messaging. It overlaps closely with Customer.io's product-led SaaS positioning and visual workflow builder capabilities.
• Klaviyo: Klaviyo is a public customer engagement platform focused on ecommerce and DTC brands, offering email, SMS, push, and reviews with strong segmentation. It competes with Customer.io for PLG and DTC customers (PurpleCarrot, Billie, Pawp overlap), and is a key comparable for the data-driven SMB-to-enterprise motion.
• OneSignal: OneSignal is a multi-channel messaging platform offering email, push notifications, in-app messages, and SMS with strong developer-friendly APIs. It overlaps with Customer.io's mid-market and SMB self-serve motion, particularly for mobile-first and product-led teams.
• Attentive: Attentive is an SMS-first marketing platform serving ecommerce and DTC brands with personalized text messaging. While its SMS focus is narrower than Customer.io's omnichannel approach, it competes for the same DTC mid-market customer base and represents a comparable on the SMS pricing and deliverability axis.

Broad incumbents

• Mailchimp: Mailchimp (an Intuit company) is a broad marketing automation incumbent covering email, landing pages, and basic automation for SMBs. It overlaps with Customer.io's Essentials tier in features but lacks the developer-first, event-driven behavioral segmentation depth that Customer.io emphasizes.
• HubSpot Marketing Hub: HubSpot offers a broad marketing, sales, and CRM suite that includes email, automation, and customer journey tools. It is a broader incumbent offering that competes for Customer.io's enterprise tier by bundling marketing automation with CRM, sales, and content tools.
• Salesforce Marketing Cloud: Salesforce Marketing Cloud is a large enterprise marketing automation suite covering email, mobile, social, advertising, and DMP capabilities. While significantly broader and more enterprise-priced, it competes with Customer.io's Enterprise tier for high-volume messaging deployments.
• Twilio Engage (Segment): Twilio Engage combines Segment's CDP with Twilio's messaging APIs to provide cross-channel orchestration. It is a broad incumbent offering CDP plus messaging and competes with Customer.io's Data Pipelines plus omnichannel orchestration positioning.

Emerging players

• Ortto: Ortto is an emerging customer data and messaging platform targeting SMB and mid-market SaaS companies with email, SMS, push, and journey builder features. It competes on the same PLG axis as Customer.io's Essentials and Premium tiers for product-led customers seeking modern UX.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/customerio
• Xx.com/CustomerIO
• Facebookfacebook.com/customerio
• LinkedInlinkedin.com/company/customer-io

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Subsidiaries1 record

Funding overview

Funding rounds7 records

Investors12 records

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

M&A1 record

Investments

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

Frequently asked questions about Customer.io