> For the complete documentation index, see [llms.txt](https://knowledge.out-smart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.out-smart.com/marketplace-packages-and-power-ups/power-ups/mollie/activate-and-connect-mollie.md).

# Activate and connect Mollie

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.

{% hint style="warning" %}
Treat your API key like a password.

Only share it with admins who manage payments.
{% endhint %}

### 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**](/marketplace-packages-and-power-ups/power-ups/mollie/use-mollie-on-invoices.md).


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