UPS has a API which could be added to Shipstation to reduce administration fees for E-commerce Shipping into the US. The API (World Ease) creates a master shipment for customs and all children can be attached.
Currently, this feature is an add on in Worldship which is awful software. But saving $30 per shipment plus paying the tariffs are costs all small business should avoid.
I would love to show a developer this process and show them how easy this is to add into your shipstation software. This feature will help ensure people buy Shipstation for any e commerce shipping into the US.