I see. It appears that the .html property is probably not going to work for you, and since the development of kixforms is at a stand still for the foreseeable future, I think it would be best to start thinking of other methods.

Perhaps create a series of different forms that are shown depending on which options is selected from the list using text boxes, labels, and so forth. Then take the information that is entered into this form and format at you would like into html?

You can also save the modified richtext as a rtf file that could maybe be read and inserted into an email? Probably depends on the email client.