When creating an email and would like to include content with the content type being inventory, there is no easy option to rearrange the order of items selected.
Let's say you want to send an email to a client including multiple artworks all by different artists. The order of the inventory you select show up in a random order; it isn't determined by the order you select each item either. The only workaround solution we have found to this issue is to add the selected content by one particular artist at a time, go back to “Manage Content > Edit Items”, and select the next set of works by another artist. Would love for this to be an option available AFTER adding the selected content, perhaps another page to confirm what you have selected with the ability to drag/move items in the order you desire.