This last response is more what I was looking for. Below is the final link I came up with, using advice from Peter, which works properly.
I am surprised there is no built in object to do this for us, like every other button in the template
Example:
Where it has the href set to button:lock_url. I was expecting the to be one similar, like: button:emailApp.
End result, though, is that it works, thanks largely in part to Peter continuing to work through our issues, and find a resolution