app/views/contact_mailer/send_contact_email.html.erb
<!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>
<div style="text-align:center;">
<h2>The Sustainability Sudoku</h2>
<p>A new message was sent from the contact form!</p>
</div>
<hr>
<p><strong>User:</strong> <%= @name %></p>
<p><strong>Email:</strong> <%= if @email then @email else 'Not provided' end %></p>
<p><strong>Message:</strong><br> <%= @text %></p>
<hr>
<div style="text-align:center;">
<small>This is an automated message, please do not reply.</small>
</div>
</body>
</html>