Hi Rasmus

Have you tried ox-koma-letter.el?
>
>
not yet, I just started recently switching back to latex and g-brief did
what I needed for a formal german letter and I just need it once per month
so far.


> #+TITLE: title
>
> #+BEGIN_g-brief
> ... here comes text
> #+END_g-brief
>

OK thanks, I take it as indication that the exporter can't be configured to
do this implicitely...


Yes.
>
>
could you please be more specific?

...

Oh I see...

 http://orgmode.org/worg/exporters/koma-letter-export.html
   "depends on the following org-mode version 8.0 or greater"


cheers
  Rolf