As others have said...this feature is a "no brainer" to add to Shipstation. I'm not sure what could be technically so complicated since Shipstation already has enough logic to flag duplicate orders. Why do I need to read the alert and press the button manually!?!? The excuses really don't make any sense.
This reply is to robepp, since we aren't allowed to click reply on a persons original message anymore on here. Yeah, you're right. As previously mentioned, just look how many years they have been "reviewing" whether they should add this feature. They do make it sound like it's rocket science that takes decades of planning and web design to happen. Anyone with even basic website design experience knows better. That reason might have flown in the 90's when people were still new to how the internet works, but NOT today. This needs to happen immediately. There is absolutely no reason to not add this. They can make it so that it automatically combines orders and if you want to split them, of course, that should be able to be done too. You can have a choice whether you want orders automatically combined or not. I am betting 90% of users will choose the automatic option.
Seriously, ShipStation; where is this already? It's been years and it's a fundamental feature offered by most default-shipping programs like ebay and amazon. C'MON!