Shopify Checkout and Carrier Calculated Shipping

Real-time shipping quotes at your store checkout can give you the competitive edge, or at least stop your profit bleeding out through not charging enough for shipping.

The Smart Send Premium app for Shopify can do this for you - but you first have to make sure that Shopify have activated 'Carrier Calculated Shipping' on your store account.

Carrier Calculated Shipping (CCS) gives your store the ability to request accurate shipping prices from the Smart Send app, given the items in the cart and the destination. 

To activate CCS, simply contact Shopify support. It's free if you have a Shopify Advanced account (or higher plan).

See also the Shopify page:

Shopify: Set up your shipping rates and methods