Create letters with Emacs org-mode

For a long time, I was trying to figure out how to create letters using Emacs, preferably using org-mode. I came across this article - Creating letters with KOMA-script, and I am quite convinced with the output. While I played around with the options to customize my need, I ended up with the following template,

#+DATE: <date>
#+SUBJECT: <subject>

#+LATEX_CLASS_OPTIONS: [fontsize=10pt,subject=centered,subject=afteropening,parskip=full,fromrule=afteraddress]
#+LATEX_HEADER: \usepackage[margin=1in]{geometry}
#+LATEX_HEADER: \usepackage[default]{droidserif}
#+LATEX_HEADER: \usepackage[T1]{fontenc}

#+FROM_ADDRESS: <address 1>
#+FROM_ADDRESS: <address 2>
#+FROM_ADDRESS: <address 3>
#+FROM_ADDRESS: <address 4>

#+TO_ADDRESS: <address 1>
#+TO_ADDRESS: <address 2>
#+TO_ADDRESS: <address 3>
#+TO_ADDRESS: <address 4>

#+OPENING: Dear <name>,
...
#+CLOSING:
Regards

Once I filled the template with contents, I followed the below steps to create a PDF letter.

1. Load library ox-koma-letter
2. Export as PDF using option C-e-k-p

Please also refer KOMA script documentation.