As far as I can tell (and I have asked support too), there is no way to add seperate label messages for different selling channels. Just one message for all selling channels. With multiple brands, this feels limiting.
Is this something ShipStation can change in the future?
Also, I can't seem to find a way to see what the packing slip and label will look like, with my chosen options, prior to printing a purchased label. The only draft I can see is a generic 4x6 label and packing slip. Thoughts here would be helpful. Thank you