Hi Martin,
Thanks for replying and sorry that I am responding too late.. I have been working later on on this project.
and I have created an HTML with the same info using <table></table> and its successfully sent by email. Like This:

So I had the -maybe not that smart- idea of writing the same Html but in a custom Box as suggested by Sergei Here
but.. It looks like this:

I can see that the html is displaying but I am getting problems with this box margins/scrolling. kinda Ugly :)
I am quite new with building Dialogs, can you give a little of hand with an example?
remember that the rows and columns can change dynamically.. could be 3 o 4 columns , 5 or 20 rows...
I am really appreciated beforehand for your help.