Epistola

\makeatletter
\def\input@path{{../}}
\makeatother

\documentclass[11pt,english,signature,boldnames]{epistola}

\begin{document}

% ============== INFORMATION ==============
\name{John Doe}
\address{21 Bridge Street}{Smallville}{Dunwich DU3 4WE}
% Optional (leave blank to not display the information)
\phone{XXX-XXX-XXXX}
% Optional (leave blank to not display the information)
\email{name@email.com}

\date{\today}

\recipient{Jane Jackson}{4048 Robinson Lane}{Houston, TX 77006}

% ============== LETTER BODY ==============
\opening{Dear Sir or Madam,}

\lipsum[1-2]

\closing{Yours faithfully,}
% ==============================================

\end{document}