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Connect Klaviyo

2 auth methods · updated 2026-10-01

Klaviyo is a data-driven email and SMS marketing platform that allows e-commerce brands to deliver targeted messages, track conversions, and scale customer relationships

www.klaviyo.com/ ↗

API key

Uses your own credential — Verslay stores it encrypted

Connectable today
  1. 1
    Sign in to Klaviyo
    Open https://www.klaviyo.com/ 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 Klaviyo dashboard.
  3. 3
    Copy it immediately
    Klaviyo 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 Klaviyo, and paste the API key into the 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

API Key

Your private Klaviyo API key (starts with 'pk_', not the public Site ID). Create it under your account name → Settings → API keys — it's shown only once, so copy it.

required · secret
Klaviyo website ↗

Klaviyo connection FAQ

How do I connect Klaviyo to Verslay?

Open Connections in the Verslay Hub, find Klaviyo, and use the API key method. The steps are: Sign in to Klaviyo, Create the API key, Copy it immediately, Connect in Verslay, Verify, Rotate safely.

What do I need before I connect Klaviyo?

You need API Key from your Klaviyo account. Your private Klaviyo API key (starts with 'pk_', not the public Site ID). Create it under your account name → Settings → API keys — it's shown only once, so copy it.

Should I use the API key or OAuth for Klaviyo?

Both are listed on this page. OAuth opens Klaviyo's official sign-in and Verslay only gets the scopes you approve. The API key route uses your own credential, which Verslay stores encrypted. Connect a new credential first and confirm it works before you revoke an old one.

Related connection guides

See also Verslay use cases and agents.

Connect Klaviyo once — every agent can use it

Verslay agents share your connections. Connect Klaviyo in the Hub and every use-case that needs it lights up — no per-agent setup.

Open the Hub →
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