Customer.io is a powerful platform for managing customer data, event tracking, and automated messaging. Relevance AI enhances this by providing intelligent insights and automation capabilities that drive personalized customer experiences.



Customer.io empowers you to manage customer data and automate messaging effectively. With Relevance AI, you can leverage advanced AI Agents to analyze customer interactions and optimize your outreach strategies.
Real-Time Journey Orchestration
The AI Agent dynamically adjusts customer communication paths based on live behavioral signals and engagement patterns.
Predictive Personalization
Leverages customer data patterns to anticipate needs and automatically customize messaging content and timing.
Behavioral Intelligence
Analyzes customer interactions to identify trends and automatically trigger relevant communication sequences.
Relevance AI seamlessly integrates with Customer.io to enhance your customer engagement workflows.
What you’ll need
You don't need to be a developer to set up this integration. Follow this simple guide to get started:
- A Customer.io account
- A Relevance AI account with API access
- Authorization credentials from both platforms (you'll connect securely using API keys)
Security & Reliability
The Customer.io integration utilizes secure OAuth authentication, ensuring that only authorized workflows can manage your customer data effectively. Relevance AI handles API operations (such as creating, updating, and segmenting customers) in the background—so you don’t have to worry about errors, formatting, or limits.
With built-in validation and type conversion, your workflows run smoothly, even when customer data formats vary. This integration allows for real-time event tracking and automated messaging, enhancing your customer engagement strategies.
No training on your data
Your data remains private and is never utilized for model training purposes.
Security first
We never store anything we don’t need to. The inputs or outputs of your tools are never stored.

To get the most out of the Customer.io + Relevance AI integration without writing code:
- Start with a clean customer database: Ensure customer attributes are well-defined and consistently formatted.
- Utilize pre-built workflows: Relevance AI provides templates for customer segmentation and event tracking—perfect for quick implementation.
- Connect securely: Double-check that you are using the correct Customer.io account and have the necessary API permissions during setup.
- Test before scaling: Validate your API calls with test customer data to prevent widespread issues.
- Monitor API usage: Be aware of rate limits and implement strategies like exponential backoff to manage API requests effectively.