Customer.io
Connect your Customer.io account to Dynamo with an App API Key.
Customer.io Integration
Connect your Customer.io account to Dynamo in just a few minutes. You'll create a dedicated App API Key, and Dynamo will use it to build Meta Custom Audiences from your Customer.io segments.
Dynamo only reads from your Customer.io account — it lists your segments, reads their size, and exports member emails for syncing. It never creates, updates, or deletes people, segments, campaigns, or any other resources.
Create a Customer.io App API Key
In Customer.io, go to Settings → Account Settings → API Credentials.
Open the App API Keys tab and click Create App API Key.
Give it a descriptive name (e.g. Dynamo Integration) and copy the key.
This must be an App API Key (used with the App API), not a Track API key pair — Dynamo will reject Track credentials.
Region
Customer.io accounts live in either the US or EU data center. Pick yours when connecting — and don't worry if you're unsure: Dynamo probes the connection on both regions and auto-corrects the region if the key answers on the other data center.
Enter your credentials in Dynamo
Go to your organization's Integrations settings in Dynamo and add a new Customer.io integration. Dynamo validates the credentials immediately to confirm the connection is working.
| What you need | Where to find it |
|---|---|
| App API Key | Settings → Account Settings → API Credentials → App API Keys |
| Region | US or EU (auto-corrected if wrong) |
What Dynamo reads
| Endpoint | Why we need it |
|---|---|
| List segments | Show your Customer.io segments in a dropdown. |
| Segment details & count | Display each segment's name and size before syncing. |
| Segment membership | Export member emails from a selected segment — paged, read-only. |
The exported emails are used to build a Meta Custom Audience you can then target with Dynamo marketing messages.