Hey, Charles – Thanks for the praise!
I don’t know if you can set SwithMail as your default mail app. Because it’s not a TRUE mail app, and just an SMTP client, I’m not sure how that would work.
As for twisting the script, yuo’d have to play with that a bit. You can set everything in the XML file, and then pass command line parameters to override XML values, so it should be able to be done, but without seeing / knowing more about how you’re wanting to pass the values, it would be hard to give advice on how to make it happen.