Hi, Sean. No, this isn’t currently possible.
You could request this as a new feature (or maybe search to see if the idea was already posted by someone else) at our plugins’ UserVoice page.
This allows others who are interested in that feature to easily voice their support. We frequently review suggestions there to find out which ones are popular, then we implement as many of them as we can.
If you post it / find it, feel free to link to it from here in case anyone comes across this forum thread in the future.
That being said, we are releasing a PDF Tickets extension later this month that will, in your example, attach 10 different PDFs to that single email.
I can’t get into more details about it now, but I’ll add this thread to the list to be updated once this extension is published so you can try it out and see if it at least makes things better for you.