
\documentclass[12pt]{letter}
\begin{document}

\address{My Street\\
         My City}

\signature{Who I Am\\ My Official Position}

\begin{letter}{Target Person \\
               Target Street \\
               Target City}

\opening{Dear Person}

A paragraph.

Another paragraph.


\closing{Best Regards,}
\cc{A person.\\Another person.}
\encl{Some enclosed.}
\end{letter}

\end{document}

