Skip to content
SocialAtoZ

Customer.io

Verified

Data-driven customer engagement platform for automated email, SMS, push, and in-app messaging

Lead Nurturing Software Marketing Automation Software Push Notifications Software
–

Not yet rated. Be the first to review Customer.io.

Visit website Request pricing Write a review
Customer.io screenshot See all screenshots
  • Deployment Cloud Based
  • Starting price $100
  • Free trial Available
  • Best for Startups, SMEs, Agencies

What is Customer.io?

Customer.io is a customer engagement platform that helps marketing and product teams turn behavioral data into personalized, automated messaging campaigns. It lets teams trigger emails, SMS, push notifications, in-app messages, and webhooks based on real-time customer actions rather than static lists, using a visual drag and drop workflow builder called Journeys.

The platform combines data unification, segmentation, and AI-assisted campaign building so marketers can create targeted customer journeys across the full lifecycle, from onboarding to retention and cross-sell. It integrates with tools like Segment, Salesforce, HubSpot, Snowflake, and Zapier, and offers a REST API for custom data pipelines, making it popular with technical teams that have solid event tracking already in place.

Key Features of Customer.io

Customer.io lists 10 documented features, including Visual drag-and-drop workflow builder (Journeys) for automated customer campaigns, Event-driven, behavior-triggered messaging based on real-time actions and Multi-channel messaging: email, SMS, push notifications, in-app messages, Slack, and webhooks. The list below covers what the product does rather than how it is marketed.

  • Visual drag-and-drop workflow builder (Journeys) for automated customer campaigns
  • Event-driven, behavior-triggered messaging based on real-time actions
  • Multi-channel messaging: email, SMS, push notifications, in-app messages, Slack, and webhooks
  • Dynamic audience segmentation using profile attributes and event data
  • A/B testing for campaigns and messages
  • AI Agent for conversation-based campaign building with brand consistency
  • Design Studio for building and formatting messages at scale
  • Analytics and reporting on campaign and messaging performance
  • Native integrations with Segment, Salesforce, HubSpot, Snowflake, BigQuery, and Zapier
  • REST API and webhooks for custom data integrations

Customer.io Pricing

Customer.io lists 2 plans, from $100 to $1,000.

Essentials

$100

per month

Request pricing

Essentials starts at $100 per month billed monthly for teams getting started with data driven messaging.

Premium

$1,000

per month

Request pricing

Premium starts at $1,000 per month billed yearly for teams scaling across channels with custom workflows.

Customer.io Specifications

Customer.io is available on web app and has iOS and Android apps. It offers an API and has a free trial.

Deployment
  • Cloud Based
Billing cycle
Monthly
Desktop
  • Web App
Mobile
  • iOS
  • Android
Languages
  • English
Built for
  • Startups
  • SMEs
  • Agencies
  • Enterprises
Support
  • Email
  • Live Support
  • Tickets
  • Training
Integrations
Segment, Salesforce (bidirectional), HubSpot, Zapier, Shopify, Amazon S3, Amazon Redshift, Azure Blob Storage, Google BigQuery, Google Cloud Storage, Snowflake, and a REST API/webhooks for custom connections
Public API
Yes
Free trial
Yes
Free plan
No
Runs in browser
Yes
Customisable
Yes
Website
customer.io

Customer.io Videos

Customer.io Screenshots

Customer.io screenshot 1

Customer.io Comparisons

Side by side comparisons of Customer.io against 3 other Marketing Automation Software options listed here.

Customer.io
EngageBay
VS
Customer.io
Iterable
VS
Customer.io
Marketo Engage (Adobe)
VS

Customer.io Reviews

No reviews yet

Used Customer.io? Share your experience and help other buyers decide.

Write the first review

Customer.io FAQs

No, Customer.io does not offer a permanent free plan. It offers a 14-day free trial with no credit card required, allowing up to 5,000 messages across all channels.

Customer.io supports email, SMS, push notifications, in-app messages, Slack, and webhooks, all triggered by real-time customer behavior and data.

Plans start at $100/month for the Essentials tier (5,000 profiles, 1 million emails/month). The Premium tier starts around $1,000/month billed yearly with custom volume pricing, and Enterprise pricing is custom quoted.

Yes, Customer.io provides a REST API and webhooks for sending customer data, triggering events, and building custom integrations beyond its native app integrations.

Customer.io is powerful but has a steeper learning curve than simpler email tools. It assumes familiarity with lifecycle marketing concepts, and setting up event tracking typically requires developer involvement.

Yes, eligible early-stage companies that have raised under $10M can get up to 12 months free through the Customer.io Startup Program, including up to 30,000 customer profiles at no cost.