2013/10/1 Eric S Fraga <e.fraga@ucl.ac.uk>
Now you are starting to blur the lines between email and document
management?  If emails get this complicated, my gut feeling is that you
are better off working on a real document (in org, of course ;-) and
generating a PDF to attach to an email.

You are certainly right Eric. Now I understand that I have to learn how writing every latex document in org-mode. I do not doubt that it is possible. 

Again, many thanks !

Jo.