Customer.io

Customer.io

Data-driven lifecycle messaging across email, push, in-app, and SMS.

Email Marketingpaid
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What is Customer.io?
Customer.io is the lifecycle messaging platform of choice for product-led companies that want campaigns driven by real behavioral data. Its visual workflow builder triggers messages from any event, attribute change, or segment move your product sends, and branches on what users actually do — across email, push notifications, in-app messages, and SMS from one canvas. Because it ingests unlimited custom events and properties (and connects natively to warehouses and CDPs), the targeting depth goes far beyond typical email tools. Teams use it for onboarding sequences, trial conversion, feature adoption nudges, and churn-prevention plays. Pricing starts at $100/month on Essentials, scaling with profile count.
Key Features

Visual journeys triggered by events, segments, and attribute changes

Email, push, in-app, and SMS in one workflow

Unlimited custom events and properties for targeting

Native data warehouse and CDP connections

A/B testing and granular conversion goals per campaign

Use Cases
  • Onboard new signups with behavior-branched sequences
  • Convert trials with usage-triggered nudges
  • Drive feature adoption with in-app and email combos
  • Win back users showing churn signals
How to Use Customer.io
  1. 1Install the SDK/API or connect your CDP and warehouse
  2. 2Define segments from events and user attributes
  3. 3Build journeys in the visual workflow editor
  4. 4Measure conversion goals and iterate with A/B tests
Best For
Product-led SaaS teamsLifecycle and growth marketersCompanies with rich event data
FAQ

How much does Customer.io cost?

Essentials starts at $100/month for up to 5,000 profiles, including email, in-app, and SMS capability. Premium plans add dedicated IPs, HIPAA support, and migration help at custom pricing.

How is Customer.io different from Mailchimp-style tools?

It is built around product events rather than lists: any action a user takes can trigger or branch a journey across email, push, in-app, and SMS. That makes it ideal for SaaS lifecycle work, not casual newsletters.

Does Customer.io send transactional email?

Yes — a dedicated transactional API handles receipts and password resets alongside campaigns, so product and marketing email can live in one platform with separated sending.

Tags
Email MarketingAutomationCRM
Quick Info
CategoryEmail Marketing
Pricingpaid
Platformsweb, api
Websitecustomer.io

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