Customer.io

Customer.io is an AI-powered customer engagement platform that enables organizations to build personalized customer journeys fueled by first-party data. Founded in 2012, it provides a unified workspace for managing and automating messages across email, push notifications, in-app messages, SMS, WhatsApp, and webhooks. The platform combines a visual workflow builder, robust data integrations, and AI-driven insights to help marketing, product, and engineering teams engage customers at every stage of the lifecycle.

• Visual Workflow Builder — drag-and-drop interface to design and automate multi-step campaign flows without writing code
• Omnichannel Messaging — send coordinated messages across email, push, in-app, SMS, WhatsApp, and webhooks from a single platform
• AI-Powered Insights — surface untapped audiences, optimize message clarity, and get AI-driven recommendations to improve campaign performance
• Audience Segmentation — build segments based on unlimited profile attributes, events, or actions to target the right people at the right time
• Data & Integrations — connect data warehouses (Snowflake, BigQuery), use Reverse ETL, APIs, and webhooks to move real-time customer data across your stack
• Ad Audience Sync — automatically keep segments in sync with Google, Facebook, Instagram, and YouTube ad networks
• Design Studio — collaborative, code-and-no-code message editor for creating high-quality email and in-app content
• A/B & Multivariate Testing — experiment with content and cadence to optimize messaging performance
• Analytics & Conversion Tracking — view campaign performance dashboards, compare metrics, and track conversion goals
• Custom Objects — enrich profiles with relational data like companies, courses, or properties to power more precise personalization
• Security & Compliance — ISO 27001 certified; compliant with GDPR, HIPAA, SOC 2 Type II, and CCPA; EU and US data residency options available
• Mobile SDKs — native support for iOS, Android, React Native, Flutter, and Expo for in-app and push messaging

To get started, sign up for a 14-day free trial (no credit card required), connect your data sources via API or native integrations, and use the visual workflow builder to launch your first automated campaign.