It's easy, just enter email to field and copy generated code to your HTML page.
<a id="m_s_693893"></a>
<script>
var xlav = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var dnxd = document.getElementById('m_s_693893');
dnxd.innerHTML = !(dnxd.innerHTML) ? xlav : dnxd.innerHTML;
dnxd.href = 'mailto:' + xlav;
</script>
<span id="m_s_353381"></span>
<script>
var xmin = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var lglq = document.getElementById('m_s_353381');
lglq.innerHTML = !(lglq.innerHTML) ? xmin : lglq.innerHTML;
</script>