Customer.io features: tier-by-tier list (2026)
Customer.io is a behavioral messaging platform starting at $100 per month for 5,000 profiles and 1 million emails on the Essentials plan.
Core capabilities (9)
Preferred by product-led companies
Customer.io listens to us and what we want. We love seeing things we’ve requested actually being built out. The best example of this has been the Sticky Notes feature.
Source · core
Supercharge your messaging
Get started Get started Book a demo Book a demo 14-day free trial No credit card required Cancel anytime
Source · core
Not only are new features being rolled out
Not only are new features being rolled out constantly, our Account Manager has operated like a consultant in terms of optimum integration and ways of using new features to achieve our business goals.
Source · core integrations
We’re so happy to have found our forever
We’re so happy to have found our forever marketing platform with Customer.io. You offer every feature and the support we need to be able to tackle all our messaging goals.
Source · core
Customer.io has so many features that allow me
Customer.io has so many features that allow me to build extremely personalized customer journeys for so many segments by leveraging triggers, unique and customizable user attributes, filters, and branch splits.
Source · core
I love the product
I love the product. The metrics are fantastic and the team is executing very well on new features.
Source · core
Create beautiful, on-brand messages fast
Craft responsive content with intuitive visual tools and developer-friendly control. Let the Agent assist with copy drafting and editing.
Source · core
One Agent across the entire platform
The Agent isn’t a separate tool, it’s built into the platform. It’s the intelligence layer embedded in every module, carrying context from one task to the next.
Source · core
Get 12 months of Customer.io free
Raised under $10M? Early-stage companies get a full year free through our Startup Program.
Source · core
AI features (9)
AI that’s built in, not bolted on
Sharper audiences. Surface high-intent segments and automatically uncover behavioral patterns in your first-party data. Smarter journeys. Build and optimize cross-channel workflows from a conversation, with logic the Agent configures for you. Stronger content.
Source · ai automation
Measure what matters, not just what’s easy
Go beyond open rates. Connect every campaign to the business outcomes you care about with conversion goals, A/B testing, and AI-powered insights.
Source · ai
Your AI tools already work here
Connect Claude, Cursor, or any MCP-compatible tool directly to Customer.io. Create segments, launch campaigns, and pull analytics without switching tabs.
Source · ai
Customer.io brings your data, messaging, and AI together
Customer.io brings your data, messaging, and AI together into a single orchestration layer, so your team can launch faster, adapt without limits, and prove ROI.
Source · ai
AI Agent (beta)
Session limits Standard Elevated Custom Persistent Memory Core Execution Skills Custom Execution Skills 3 10 Custom Routines: # of tasks 1 5 Custom Routines: frequency Weekly Daily Custom
Source · ai
Journeys
LLM actions (beta) Visual workflow builder Cross-channel campaign automation Send-time optimization In-app message suggestions API-triggered broadcasts Scalable Personalization Custom SMTP
Source · ai api automation
Audiences
Profiles (people + objects) 5,000 Custom Custom People attributes Unlimited Unlimited Unlimited Custom objects Object types 2 10 Custom Segments AI-powered segment builder Suggested segments Nested data Ad audience sync Custom collections —
Source · ai
Design Studio
Drag-and-drop visual editor Code editor AI-generated global styles AI translator for messages Email content analysis Reusable components Saved templates & version control
Source · ai
Usage + Billing
User seats Unlimited Unlimited Unlimited Workspaces 2 Unlimited Unlimited Additional people & object profiles $0.009 Custom Custom Additional 1,000 emails $0.12 $0.12 $0.12 Additional AI credits $10 / 100K $10 / 100K Negotiated Plan term Monthly Annual Annual
Source · ai
Integrations (2)
Channels
Monthly email sends 1M Custom Custom Transactional emails Monthly push and in-app Unlimited Unlimited Unlimited Mobile SDKs Monthly SMS sends Custom Custom Custom WhatsApp (Native) LINE Webhook (send & receive) Unlimited Unlimited Unlimited Anonymous messages
Source · integrations webhooks
Data & integrations
Monthly API calls Unlimited Unlimited Unlimited Integrations Basic Basic & Premium Basic & Premium MCP server Data index Connected forms Privacy management Reverse ETL Data warehouse destinations — Data replay —
Source · integrations api
Collaboration (4)
Multi-channel campaigns
Email, push, in-app, SMS, anonymous messages, Slack, webhooks, WhatsApp and more
Source · collab webhooks
Easily collect, unify and route your first-party data
Create a flexible, real-time data foundation that adapts to your architecture, so journeys always run on the freshest data.
Source · collab real-time
Target the right people with real-time precision
Define segments using any combination of profile data, events, and behaviors. Segments update in real time as your data changes.
Source · collab real-time
Orchestrate cross-channel workflows that react in real time
Build multi-step journeys that respond to customer behavior in real time across email, SMS, push, in-app, and more.
Source · collab automation
Security and compliance (2)
Omnichannel messaging that delivers outcomes
All case studies 50% Onboarding open rate 4% Increase in winback conversions 14% Increase in first transactions GDPR compliant AICPA SOC certified Users love us Security first HIPAA compliant
Source · security
Security + Compliance
SSO & 2-factor authentication US / EU data centers SOC Tier II Compliance Standard role-based permissions Custom role-based permissions — Managed deliverability — HIPAA Compliance — Custom Custom Audit logging & data governance — — Available by Consultation De
Source · security sso audit log permissions
See Customer.io pricing in detail
This page lists what Customer.io does. For per-seat math, tier comparison, and the full hidden-fee list, see the Customer.io pricing breakdown.
Closest alternatives
Other behavioral messaging platform tools buyers shortlist when they evaluate Customer.io.
Sources
Features evolve. Confirm directly with the vendor before purchase decisions. This list was last refreshed on 2026-05-27.
Frequently asked questions
What features does Customer.io include?
This page tracks 26 verified Customer.io features across 5 categories, sourced from Customer.io's official site.
Which tier do I need for Customer.io?
Customer.io's feature availability varies by plan. Compare the public Customer.io tiers, calculator, and hidden fees on the Customer.io pricing page.
How does Customer.io compare on features to alternatives?
Buyers commonly compare Customer.io against Braze, Iterable, Klaviyo. Each alternative's feature page is linked below where we cover it.