Customer.io

Customer.io is a cloud-based customer engagement platform from Peaberry Software, Inc. It combines customer profiles, behavioral events, segmentation, workflow automation, and outbound messaging in one workspace.

The platform supports automated email, push notifications, SMS, in-app and web messages, Slack messages, and webhooks. Teams can trigger communications from profile changes, tracked events, segments, API calls, and workflow conditions.

Customer.io was founded in 2012. Its current product scope includes Journeys for messaging automation, Data Pipelines for customer data movement, and Parcel for email code editing.

Customer.io provides a visual workflow builder for multi-step automations. Workflows can include delays, branches, message actions, data actions, webhooks, A/B tests, conversion goals, and exit conditions.

Profiles can contain attributes, events, object relationships, and automation history. This data model supports behavior-based segmentation and personalization across customer journeys.

Supported channels include email, SMS and MMS, mobile push, web and mobile in-app messages, Slack, and webhooks. SMS and MMS can use Twilio, Infobip, Vonage, or Sinch, with additional United States and Canada sending options.

The platform includes APIs and SDKs for data ingestion, workspace management, transactional messages, API-triggered broadcasts, and mobile or web messaging. Its documentation also describes AI-assisted automation building, message drafting, campaign analysis, and other workspace actions.

Customer.io’s current paid plans are Essentials, Premium, and Enterprise. Essentials starts at $100 per month when billed monthly and includes 5,000 profiles, 1 million emails per month, two object types, the visual workflow builder, basic data integrations, and email and community support.

Premium starts at $1,000 per month when billed annually. It adds custom profile and email volumes, ten object types, elevated AI Agent limits, scheduled routines, premium integrations, chat support, and onboarding support.

Enterprise pricing is custom. Enterprise adds dedicated infrastructure, priority technical support, migration assistance, governance features, dedicated hardware, and optional implementation and customer success services.

Customer.io advertises a 14-day free trial without requiring a credit card. Eligible early-stage companies that have raised under $10 million can also apply for a startup programme offering 12 months free.

Customer.io’s main strengths are event-driven automation, flexible data modeling, cross-channel orchestration, and developer-oriented APIs. The platform suits organizations that need messaging to respond closely to product behavior.

Its main trade-offs are pricing complexity, profile and email overage billing, technical setup requirements for SDK-based channels, and higher plan thresholds for some integrations and support features. Smaller teams may find the starting price high compared with simpler email tools.

Comparable alternatives include Iterable, Braze, Klaviyo, OneSignal, ActiveCampaign, HubSpot Marketing Hub, MoEngage, CleverTap, and Intercom. Iterable and Braze are close alternatives for enterprise customer engagement. Klaviyo is a common choice for commerce-focused email and SMS. OneSignal is more focused on push and notification messaging.

Does Customer.io offer a free trial?
Yes. Customer.io advertises a 14-day trial without requiring a credit card.

What platforms does Customer.io support?
The service is primarily web-based. Its documentation provides SDKs or integration guidance for JavaScript, iOS, Android, React Native, Expo, and Flutter.

Which integrations does Customer.io support?
Customer.io provides inbound and outbound integrations, including data warehouses, analytics services, CRMs, advertising destinations, webhooks, and its own APIs. Salesforce is listed as a Premium integration, while the integration directory includes services such as Amplitude, Azure Blob Storage, Braze, CleverTap, Close, FullStory, and Gainsight PX.

Does Customer.io have an API?
Yes. Its Pipelines API is intended for sending customer data and events. Its App API supports workspace data retrieval, automation management, newsletters, transactional messages, and API-triggered broadcasts.

Does Customer.io provide mobile messaging?
Yes. Mobile push and in-app messaging support includes Apple Push Notification service, Firebase Cloud Messaging, iOS, Android, React Native, Expo, and Flutter integration paths.