\DocumentMetadata{testphase = {phase-III,math,firstaid}}
\documentclass[a4paper]{article}

\usepackage[T1]{fontenc} % encoding
\renewcommand{\familydefault}{\sfdefault} % sans-serif font
\usepackage[nopatch=footnote]{microtype} % better font looking

% Langages
\usepackage[french]{babel}
\frenchsetup{SmallCapsFigTabCaptions=false}
\usepackage{csquotes}
\MakeOuterQuote{"}

% Add \extra info to title
\makeatletter
\providecommand{\extra}[1]{
  \apptocmd{\@author}{
    \end{tabular}
    \par\vspace*{0.7em}
    \begin{tabular}[t]{c}
    #1}{}{}
}
\makeatother

% Change page dimensions
% \usepackage[
%   a4paper,
%   left=20mm,
%   top=20mm,
% ]{geometry}

% Code integration
% \usepackage{minted}
% \usemintedstyle{emacs}

% Metadatas
\def\docTitle{TITLE}
\def\docAuthor{YOU}
\def\authorMail{mailto:place@holder.com}
\def\docSubject{SUBJECT}
\def\docLocation{LOCATION}

\usepackage[
  pdfauthor={\docAuthor},   % author  metadata
  pdftitle={\docTitle},     % title   metadata
  pdfsubject={\docSubject}, % subject metadata
  hidelinks,                % clickable links in table of contents
]{hyperref}

\title{\docTitle}
\author{\href{\authorMail}{\docAuthor}}
\extra{\docSubject~$\cdot$ \docLocation}
\date{}

\begin{document}
\maketitle
\flushbottom
\tableofcontents
\clearpage

\section{SECTION}
Hello, world!

\end{document}