<!DOCTYPE html>
<html>
<head>
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
</style>
</head>
<body>
<ul>
<li><a data-email="johndoe@example.com" href="mailto:johndoe@example.com">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="mailto:marymoe@example.com">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="mailto:amandapanda@example.com">Amanda Panda</a></li>
</ul>
</body>
</html>