In the footer of all the pages of the site that I'm touching, there is a field of Subscribe, for email rescue and newsletter sending. But I do not know how to make it work, does anyone help me?
Follows:
<form class="newsletter">
<input type="email" name="EMAIL" placeholder="Seu endereço de e-mail" required />
<button><i class="fa fa-paper-plane"></i></button>
</form>