Good evening Bruce and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
You are correct, this is most likely to require a bit of customization on your end.
As you might know, the scope of our support is mostly to get our customers started on the right track and to help them in case of issues.
We unfortunately do not provide complete support for customization.
With that in mind, here is a snippet that completely disables ticket from being emailed. Hopefully that will help you get going: https://gist.github.com/GeoffEW/67488cc3d5dda12a9e252e16e39191f4
Let me know if that helps.
Have a great day!
Geoff B.