Connect Customer.io
1 auth method · updated 2026-10-01
Customer.io is a customer engagement platform that enables businesses to send targeted messages to their customers through various channels, including email, SMS, and push notifications.
customer.io/ ↗API key
Uses your own credential — Verslay stores it encrypted
- 1Sign in to Customer.ioOpen https://customer.io/ and sign in to the account you want to connect.
- 2Create the API keyGenerate a new API key from the API or developer settings in your Customer.io dashboard.
- 3Copy it immediatelyCustomer.io usually shows the full API key only once, right after you create it. Store it somewhere safe before closing the page.
- 4Connect in VerslayIn the Verslay Hub, open Connections, find Customer.io, and paste the API key into the App API Key field.
- 5VerifyThe connection flips to Connected. Run any read-only action once to confirm the credential has the right scopes.
- 6Rotate safelyWhen you rotate later: connect the new credential first, confirm it works, then revoke the old one.
What you’ll paste into Verslay
The App API Key used for authenticating requests to the Customer.io App API.
The region of the Customer.io account. Leave empty for Global, use '-eu' for EU region.
Customer.io connection FAQ
How do I connect Customer.io to Verslay?
Open Connections in the Verslay Hub, find Customer.io, and use the API key method. The steps are: Sign in to Customer.io, Create the API key, Copy it immediately, Connect in Verslay, Verify, Rotate safely.
What do I need before I connect Customer.io?
You need App API Key, Region from your Customer.io account. The App API Key used for authenticating requests to the Customer.io App API.
Related connection guides
See also Verslay use cases and agents.
Connect Customer.io once — every agent can use it
Verslay agents share your connections. Connect Customer.io in the Hub and every use-case that needs it lights up — no per-agent setup.
Open the Hub →