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Connect Customer.io

1 auth method · updated 2026-09-10

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

Connectable today
  1. 1
    Sign in to Customer.io
    Open https://customer.io/ and sign in to the account you want to connect.
  2. 2
    Create the API key
    Generate a new API key from the API or developer settings in your Customer.io dashboard.
  3. 3
    Copy it immediately
    Customer.io usually shows the full API key only once, right after you create it. Store it somewhere safe before closing the page.
  4. 4
    Connect in Verslay
    In the Verslay Hub, open Connections, find Customer.io, and paste the API key into the App API Key field.
  5. 5
    Verify
    The connection flips to Connected. Run any read-only action once to confirm the credential has the right scopes.
  6. 6
    Rotate safely
    When you rotate later: connect the new credential first, confirm it works, then revoke the old one.

What you’ll paste into Verslay

App API Key

The App API Key used for authenticating requests to the Customer.io App API.

required · secret
Region

The region of the Customer.io account. Leave empty for Global, use '-eu' for EU region.

optional
Customer.io website ↗

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 →
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