use roboto font in email code example
Example: roboto font embed
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">