1、
<a href="#" onclick="fSend()" >发邮件</a>
<script language="javascript">
function fSend(){
var oe=new ActiveXObject("wscript.shell");
oe.run("msimn");
}
</script>
2、<a href="mailTo:123u@163.com>发邮件</a>
<input type="button" value="mailTo" onclick="location.href='mailTo:123u@163.com'">