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\newcommand{\journal}{Journal}
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\begin{document}

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\fromwhom{}{Pierre-Fran\c{c}ois Loos}{}{Laboratoire de Chimie et Physique Quantiques (UMR5626)}{loos@irsamc.ups-tlse.fr}{+33 5 6155 7339}{}
\setsalutation{To}
\renewcommand{\yoursdetails}{Yours sincerely, the authors}

\begin{letter}%
{the Editors of \textit{\journal{}}}

%\opening{Dear Editors,}

\vspace{-1em}
\justifying
Please find attached a manuscript entitled 
\vspace{-1.25em}
\begin{center}
\textbf{\papertitle{}}
\end{center}
\vspace{-1.25em}
for consideration as a \underline{Regular Article} to the \textit{\journal}. 
This contribution has never been submitted in total nor in parts to any other journal, and has been seen and approved by all authors.

\end{letter}



\end{document}