2013/5/13 Eric Schulte <schulte.eric@gmail.com>

> A while back Org-mode switched its method of exporting latex equations
> to HTML.  Equations used to be exported as png images, however they are
> now exported as markup which may then be processed on the fly by
> client-side javascript.  Most mail readers do not allow javascript in
> html email, and I doubt that the required javascript headers are
> included in the mail html mime part.
>

Thanks Eric for your precise reply. Does it means that there is a sort of
bug in Thunderbrid or that another configuration of Thunderbird could solve
this problem? In this case, I consider that I can write succesfully LaTeX
equations in Gnus or Wanderlust and that is a good news !

Thanks again.

Jo.