<div class="col-md-3 white">
     <div class="options">
        <a id="emailRandomiser" href="#" class="hvr-grow">
        <h2>check your emails</h2>
        </a>
     </div>
</div>

var pages = ["another-day.html", "not-julie.html", "the-kitchen.html", "reception.html"];
document.getElementById("emailRandomiser").addEventListener("click", function() {
    window.location.href = pages[Math.floor(Math.random() * 4)];
});