Connect Customer.io to Klaviyo
Automate workflows between Customer.io and Klaviyo. No coding required.
What you can automate between Customer.io and Klaviyo
These are the most popular automations teams set up between Customer.io and Klaviyo. Each one runs automatically once activated — no manual steps.
Add subscriber when new subscriber
Add someone to your mailing list automatically when when someone joins your mailing list.
Add subscriber when new subscriber
Add someone to your mailing list automatically when when someone joins your mailing list.
Sync Customer.io changes to Klaviyo
Keep Klaviyo updated when when a recipient opens your email.
What syncs between Customer.io and Klaviyo
When an event occurs in Customer.io, the relevant data is automatically sent to Klaviyo. Arahi maps the fields between both apps so the data arrives in the right format — no manual formatting or exports required.
Data from Customer.io
- Campaign data
- Subscriber lists
- Email opens / clicks
- Audience segments
- Tags
Data from Klaviyo
- Campaign data
- Subscriber lists
- Email opens / clicks
- Audience segments
- Tags
How to connect Customer.io to Klaviyo
Follow these steps to set up your integration. The entire process takes under 5 minutes.
What you'll need
- An active Customer.io account
- An active Klaviyo account
- A free Arahi AI account (sign up takes 30 seconds)
Create your Arahi AI account
Sign up at app.arahi.ai — it's free and takes 30 seconds. No credit card required. You'll land on the dashboard where you can create your first workflow.
Authenticate Customer.io
Click "Add Connection" and select Customer.io from the app directory. You'll be redirected to Customer.io's authorization page. Grant Arahi access to your campaigns, audiences, and analytics data. You control which lists and campaigns the integration can modify.
Authenticate Klaviyo
Same process for Klaviyo. Click "Add Connection," select Klaviyo, and authorize access. Grant Arahi access to your campaigns, audiences, and analytics data. You control which lists and campaigns the integration can modify.
Choose your trigger
Select what event starts the workflow. For this integration, popular triggers include: new subscriber in customer.io or new subscriber in klaviyo. The trigger fires automatically whenever that event happens — no manual intervention.
Configure the action
Define what happens when the trigger fires. For example: add subscriber in klaviyo. Map the data fields between Customer.io and Klaviyo so the right information lands in the right place.
Test and activate
Run a test to confirm data flows correctly between Customer.io and Klaviyo. Check that the fields map as expected, then toggle the workflow on. It runs 24/7 from here — Arahi handles retries, error logging, and monitoring automatically.
Why connect Customer.io and Klaviyo?
Manually moving data between Customer.io and Klaviyo is error-prone and eats into your team's productive hours. Connecting them through Arahi eliminates that overhead — events in one app trigger actions in the other automatically.
Tips for your Customer.io + Klaviyo integration
Get more out of this integration with these best practices.
Who uses the Customer.io + Klaviyo integration?
Teams across industries connect Customer.io and Klaviyo to streamline their workflows.
Marketing managers running campaigns who need Customer.io and Klaviyo in sync
Content marketing consolidating their marketing stack
Content creators managing workflows eliminating duplicate work across platforms
Frequently asked questions
Everything you need to know about connecting Customer.io and Klaviyo.
How do I connect Customer.io to Klaviyo?
Sign up for a free Arahi AI account, then click "Add Connection" to authenticate both Customer.io and Klaviyo via OAuth. Choose a workflow template — like syncing marketing events to marketing actions — customize the field mapping, and activate. The entire setup takes under 5 minutes.
What can I automate between Customer.io and Klaviyo?
You can automate a wide range of workflows: sync new Customer.io events to Klaviyo actions, trigger Klaviyo updates when Customer.io data changes, create Klaviyo records from Customer.io events, and build conditional workflows with filters and field mapping. Each workflow runs 24/7 with automatic retries.
Is the Customer.io and Klaviyo integration free?
Arahi AI includes 100 free actions per month on the Starter plan — enough for most small teams. If your Customer.io-to-Klaviyo workflows need more volume, paid plans start at $29/month with unlimited workflows and priority execution.
Is my Customer.io data secure when connected to Klaviyo?
Yes. Arahi uses OAuth 2.0 for authentication — we never store your Customer.io or Klaviyo passwords. All data is encrypted in transit (TLS 1.3) and at rest (AES-256). Your marketing data is only accessed when a workflow runs, and you can revoke access at any time from your Arahi dashboard.
Can I sync data both ways between Customer.io and Klaviyo?
Yes. You can set up workflows that trigger from either Customer.io or Klaviyo. For example, create a workflow where Customer.io events update Klaviyo, and a separate one where Klaviyo changes sync back to Customer.io. Each direction is configured independently so you have full control.
Do I need technical skills to connect Customer.io and Klaviyo?
No coding is required. Arahi's visual workflow builder lets you configure triggers, actions, and field mapping with clicks. If you can use Customer.io and Klaviyo, you can set up the integration. Most users are running their first workflow within 10 minutes.
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