I have been doing a couple of sites over the Christmas period and both used forms so I used Jot Form through the Placeholder. Then I was Stumbling today and saw this: http://www.fromdev.com/2014/12/how-t...ine-forms.html
Well it's not really a tutorial for any Xara products but it gives a reasonable explanation on how to use JotForm. I think JotForm is the right solution for Xara users and it's only a quick copy and your ready to paste into the placeholder with all the CSS & Java script already there. Well worth the look if you haven't already used any of the free online form builders.