Activate and connect Mollie

Activate the Mollie Power-Up, enter your API key, and test the connection before you go live.

Before you use Mollie, first activate the Power-Up and connect your Mollie account.

1. Activate Mollie

First make sure Mollie is active for your environment.

If needed, activate it through the Marketplace or your package setup.

2. Prepare your Mollie account

Sign in to your Mollie account.

Then complete the verification steps required by Mollie.

Mollie controls which payment methods become available on your account.

3. Copy your API key

In Mollie, open the developer or API section.

Start with a test API key.

Use a live API key only after testing is complete.

Treat your API key like a password.

Only share it with admins who manage payments.

4. Connect Mollie in OutSmart

Open Settings → Settings → Software integrations.

Then open the settings for Mollie.

Paste your API key and save the integration.

If OutSmart shows a connection check, run it before you continue.

5. Test the setup

Use a test key first.

Then create a test invoice and payment link.

Check these points:

• the payment link opens correctly
• the test payment can be completed
• the invoice payment status updates as expected
• the transaction appears in Mollie

6. Switch to live payments

Replace the test key with your live key.

Then save the settings again.

Run a small live payment first if you want to validate the full flow.

Next step

Continue with Use Mollie on invoices.