Try this, and tell me if works. (If not, I will delete answer.)
<script>
function sendEmail()
{
window.location = "mailto:xyz@yourapplicationdomain.com";
}
</script>
<div onclick="sendEmail();">Send e-mail</div>
It is possible to pass the parameters subject and body, but I think that it is not possible to format the text:
<a href="https://stackoverflow.com/questions/19639900/mailto:xyz@yourapplicationdomain.com?subject=Me&body=Hello!">EMAIL</a>