Highlights of the feature:

One-click locker selection makes it simple to use.
Option for free shipment when you reach a certain level (calculated with discounts)
Products can be excluded.
There are several integrations available.
You must activate Carrier Service API if your shop is on the Basic Shopify or Shopify plan.

There are three possibilities:

Pay for Shopify yearly with a 10% discount (recommended) - after payment, contact Shopify Support to enable it.

Upgrade to Shopify Advanced ($299/mo) or above to have the API turned on automatically.

Order it for an extra $20/month - contact Shopify Support for more information.

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