RE: submission form information also sent to text file.
Just to clarify what you're looking to accomplish here, do you already have a form constructed using the Constant Contact API or are you looking to build the form from scratch?
If you have already created the form using the Constant Contact API, you can add some simple functionality to it depending on the language to create a text file of the information as well and either save it to a location or email it to a specific address. The code for that functionality would vary greatly depending on language and would be beyond the scope of our forum support, but it would definitely be something you can do.
Dave Berard Senior Product Manager, Constant Contact