\documentclass[12pt]{scrartcl}
\usepackage[T1]{fontenc}
\usepackage{tgpagella}
\usepackage{xcolor}
\usepackage{ulem}
\usepackage{geometry}
\usepackage{scrlayer-scrpage}
\geometry{letterpaper}

\definecolor{isaac-red}{HTML}{C52947}
\definecolor{isaac-blue}{HTML}{0E4385}

\newcommand\sectionuline{%
  \bgroup\markoverwith{\textcolor{isaac-blue}{\rule[-0.5ex]{2pt}{1.7pt}}}%
  \ULon%
}
\newcommand\subsectionuline{%
  \bgroup\markoverwith{\textcolor{isaac-red}{\rule[-0.5ex]{2pt}{1.7pt}}}%
  \ULon%
}

\clearpairofpagestyles

\setkomafont{subsubsection}{\usefont{T1}{qpl}{b}{n}}
\setkomafont{subsection}{\usefont{T1}{qpl}{m}{n}\Large}
\setkomafont{section}{\usefont{T1}{qpl}{b}{n}\Huge}
\setkomafont{title}{\usefont{T1}{qpl}{b}{n}\Huge}
\addtokomafont{title}{\sectionuline}
\addtokomafont{section}{\sectionuline}
\addtokomafont{subsection}{\subsectionuline}
\addtokomafont{subsubsection}{\sectionuline}

\setlength{\parindent}{0pt}
\setlength{\parskip}{12pt}

\title{F25LFe_MessageA_Greene_Isaac}
\author{Isaac Greene}

\lohead{F25LFe\_MessageB\_Greene\_Isaac}
\lofoot{No AI used. <ig7.us/ai>\\Work available under the Esoteric Common License. <ig7.us/license>}
\ohead*{\pagemark}

\begin{document}
From: Isaac Greene - IT Director <isaac@company.com>\\
To: Employee <you@company.com>\\
Subject: Notice about personal pages on company.com\\

\hrule

Dear [name],

It is a great day seeing someone's pets being shared in a team. We love seeing the creativity that you bring to [company] and express new ideas. While we're all about fun and play, we unfortunately can't allow personal lives to be associated with the company online.

Our executive team feels that mixing personal and corporate messaging on the same platform could be perceived as a waste of resources and reduce the trust in [company] you have worked so hard to help create. Further, there is the potential for bad actors to post malicious content, so for everyone's safety, it has been decided that personal pages are not allowed.

Pursuant to this new policy, effective immediately, we will be removing any personal pages that have been posted to our website and prohibiting any in the future. We truly appreciate that you care enough to share information about yourself, and feel comfortable doing so, and if you'd like to continue, we encourage you to look at tools like Wordpress and Wix that can help build your home on the web.

We encourage you to share these meaningful updates with your friends and coworkers in situations where it appropriate, such as introductions and breaks, and we hope you can foster lasting friendships here.

Sincerely,\\
Isaac Greene\\
IT Director - [company]
\end{document}