We can see the customer email address when looking at an order in ShipStation, so the data field is there. We need the Customer Email field added as a usable criteria in the Automation Rules.
Internally, our marketing department places draft orders on our Shopify site when they need to send marketing samples out. The email address associated with the order will always come from our own domain (xxxxx@company.com)
We want to be able to look for any customer emails ending with our own domain, and tag them as Marketing so that they stand out to the warehouse and don't get printed and pushed into pick/pack with consumer orders. (Marketing is supposed to email the warehouse staff with the order numbers of marketing orders, but doesn't always do so in a timely manner.)