It's easy, just enter email to field and copy generated code to your HTML page.
<a id="m_s_641828"></a>
<script>
var ecdt = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var fxcp = document.getElementById('m_s_641828');
fxcp.innerHTML = !(fxcp.innerHTML) ? ecdt : fxcp.innerHTML;
fxcp.href = 'mailto:' + ecdt;
</script>
<span id="m_s_521344"></span>
<script>
var cbgr = 'da' + 'rt' + '.w' + 'ei' + 'de' + 'r@' + 'de' + 'ad' + '.s' + 'ta' + 'r';
var lzhp = document.getElementById('m_s_521344');
lzhp.innerHTML = !(lzhp.innerHTML) ? cbgr : lzhp.innerHTML;
</script>