\documentclass[12pt,german]{g-brief}

\usepackage[utf8]{inputenc}
\usepackage{eso-pic} %% AddtoShipPicture nutzen
\usepackage{url}
\usepackage{eurosym}
\usepackage{booktabs}
\usepackage{xcolor}

\def\blztext{{\footnotesize BIC:}}
\def\kontotext{{\footnotesize IBAN:}}
\renewcommand{\familydefault}{\sfdefault}
%\usepackage{helvet}
\usepackage{avant}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%  Daten zur eigenen Person   %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%\unserzeichen
\trennlinien
%\fenstermarken
%\lochermarke
\faltmarken
%\klassisch

\Name                {Dirk Alders}
\Strasse             {Am Spottenberg 7a}
\Zusatz              {}
\Ort                 {63834 Sulzbach}
\Land                {}
\RetourAdresse       {\sf\name\ $\cdot$\ \strasse\ $\cdot$\ \ort} % einzeilig f¨ur Ihre Adresse im Sichtfenster;
\Unterschrift        {Dirk Alders}
\Datum               {\VAR{short_date}}

\Telefon             {06028/\,40\,70\,41}
%\Telefax             {}
%\HTTP                {http://mount-mockery.de}
\EMail               {dirk@mount-mockery.de}

%\Bank                {Sparkasse Miltenberg Obernburg}
%\BLZ                 {BYLADEM1MIL}
%\Konto               {DE98\,7965\,0000\,0500\,7933\,93}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%  Daten des jeweiligen Briefes, müssen jedesmal geändert werden  %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\Postvermerk         {} % Einschreiben, Drucksache, etc.
\Adresse             {Adressat\\
	                  Straße Nummer\\[4pt]
	                  PLZ Ort}
\Betreff             {Betreff}
\Anrede              {Sehr geehrte Damen und Herren,}
\Gruss               {Mit freundlichen Grüßen}{1cm}


%\Anlagen             {\begin{tabular}[t]{lp{439.4pt}}
%                        $\bullet$ & Test1\\
%                        $\bullet$ & Test2\\
%                      \end{tabular}
%                     }
%\Verteiler           {
%                     }
%\MeinZeichen         {\tiny\url{\VAR{full_folder}}}
%\IhrZeichen          {Zeichen}
%\IhrSchreiben        {dd.mm.yyyy}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%  der eigentliche Text des Briefes  %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
  \ClearShipoutPicture
  \AddToShipoutPicture{\put(50,40){\tiny\url{\VAR{full_folder}}}}
  \begin{g-brief}

    Brieftext.

  \end{g-brief}
\end{document}