need ability to add extra shipping and handling charge
The ability for us to to add a S&H Charge to a "rate browser" shipment or manual order is important. For example, we want to be able to charge $3.50 S&H to each shipment above and beyond the negotiated UPS/FedEx rates. This would be used when we have a walk-in customer or manual shipment to process (not an e-commerce order).
ShipStation has released a tool available for some selling channels that will allow the ability to add a set charge to the rate your customer sees at checkout.
This feature is called In-cart Delivery Options and is currently available for Shopify, BigCommerce, and Magento (with more channels to come).
You can review how to use the feature in this article on our help center: https://help.shipstation.com/hc/en-us/articles/360046301731