<div class="test">
    企业微信：
    <a  rel="nofollow" href="wxwork://message?uin=账号&amp;source=100">touck me</a>
  </div>
<!-- 微信不可以： -->
  <div class="test">
    微信：
    <a  rel="nofollow" href="weixin://dl/business/?ticket=">test </a>
  </div>
  <div class="test">
    QQ：
    <a  rel="nofollow" href="http://wpa.qq.com/msgrd?v=3&uin=账号&site=qq&menu=yes" target="_blank">QQ在线客服</a>
  </div>
  <div class="test">
    邮箱：
    <a href=mailto:sample@163.com>send email</a>
  </div>
  <div class="test">
    skype: 
      <a rel="nofollow" href="skype:账号?chat" target="_blank" class="item"><img style="width:30px;height:30px;" src="./1.jpg" alt=""></a>
  </div>
  <div class="test">
    whatsApp: 
      <a rel="nofollow" href="https://wa.me/账号" target="_blank" class="item"><img style="width:30px;height:30px;" src="./1.jpg" alt=""></a>
<!--location.href = "https://api.whatsapp.com/send/?phone=85297589082&text=妳好&app_absent=0";-->
  </div>