No. There is no price per label at Smart Send. Your subscription determines which features you have access to but you will never be charged per label.
No. Smart Send only provides the integration between you and your carrier. Smart Send does not sell either freight or shipping labels.
Yes. You can easily enter and use several shipping companies for the same webshop. Login to your Smart Send account and select Carrier Accounts in the menu in the top right corner. Here you can connect all your carriers.
We currently have plug and play integrations for Shopify, WooCommerce, PrestaShop and Magento 1. If you do not have one of these CMS systems then you can connect through our Rest API.
Contact the carrier directly to get an agreement.
See more info here