\documentclass{article}
\let\SUP\textsuperscript
\title{Foo and bar}
\author{first\_person\SUP{1}, second\_person\SUP{2}, third\_person\SUP{3}\\[\bigskipamount]
\{\SUP{1}mail, \SUP{2}mail, \SUP{3}mail\}@gmail.com}
\date{institution name\\location}
\begin{document}
\maketitle
\end{document}