Hi:
I'm not sure what version of IP you are using, but I know in 2010 (and I think in 2007), you can set your email submit connection to submit the current view only.
Then you just need a little magic to make the current view only include what you want. We generally add a field (either in a secondary data source or in the main data source if you don't mind clutter) named something like "IsEmailing". It should be a Boolean with false as the default value. In your form view, add two sections -- one set to hide when IsEmailing = true, one set to hide when IsEmailing = false.
Then, put all your "filling out the form" controls in your section that hides when IsEmailing = true.
Put your "stuff I want to email" controls in your section that hides when IsEmailing = fales.
In the button (or submit rules, or whatever you are using to send via email), first set IsEmailing = true. This will hide all the "filling out the form" controls and show all the "stuff I want to email". Submit using your email connection. Set IsEmailing back to false.
Ta-Da! you've only emailed the info you want to!