A Simple Letter (isodoc.cls)
Make sure you have at least version 1.04 of isodoc as earlier versions had a problem when both the copyto and enclosures keys were used.
\documentclass[12pt]{isodoc}
\setupdocument
{%
language={en-GB},%
company={University of Somewhere},%
who={Mr Big Head},
street={Academic Lane},%
city={Some City},%
zip={AB3 4YZ},%
country={United Kingdom},%
countrycode={GB},%
areacode={44},%
cityzip,%
subject={A sample letter},%
closing={Yours sincerely},%
enclosures={Photocopy of something interesting\\
Photocopy of something rather dull},%
signature={Big Head},%
copyto={Prof Important Person\\Dr Bor Ing},%
footer,%
phone={123456789},%
cellphone={712345678},%
email={big.head@somewhere.ac.uk},%
website={somewhere.ac.uk},%
date={2014-03-01}%
}
\begin{document}
\letter
[%
opening={Dear Mrs Canary},%
to={Mrs Mabel Canary\\%
24 The Street\\%
Some Village\\Some Town\\%
Noshire\\AB1 2YZ},%
ourref={ABC/123}%
]%
{%
This is an imaginary letter.
This is the second paragraph of the letter.
}
\end{document}
Download isodoc-sample1.tex or isodoc-sample1.pdf.