template.html

<!DOCTYPE html>
<html lang="es">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>Correo enviado desde GO</h1>
    <h2>Gracias por suscribirte a nuestra lista {{.Name}}</h2>
    <img src="http://www.unixstickers.com/image/cache/data/stickers/golang/Go-brown-side.sh-600x600.png" title="gopher" alt="Logo golang">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquid expedita harum id ipsa tenetur! Ab, aperiam assumenda atque delectus error molestiae nemo obcaecati optio quidem quod recusandae reiciendis, veniam voluptates?</p>
</body>
</html>