Outlook Mac OS HTML邮件签名格式异常，求问题排查

针对你遇到的签名在Outlook Mac中挤压错乱的问题，核心问题出在HTML结构和Outlook的兼容性处理上，以下是具体修复点：

• 移除<p>标签：Outlook对<p>的默认上下边距解析和浏览器差异极大，会直接导致内容挤压，建议直接在<td>内用行内元素配合<br>排版。
• 修正表格属性错误：代码里的<td width="275" heigh="100%">存在拼写错误，heigh应改为height，避免布局计算异常。
• 清理Apple专属标签：复制时带入的<br class="Apple-interchange-newline">是Chrome针对苹果生态的特殊标签，Outlook无法正确解析，替换为普通<br>。
• 添加明确的内边距和行高：给每个<td>设置padding控制上下间距，确保内容不会过度紧凑，同时统一行高样式。

修改后的完整代码：

<html lang="en">
<body style="color:#063059; font-family:Arial, Helvetica, sans-serif; line-height:1.5;">
  
  <table width="350" border="0" cellspacing="0" cellpadding="0" role="presentation">
    
  <tbody>
    
  <tr>
    <td width="75" style="padding-right: 10px; vertical-align: top;">
      <a href="https://example.com/"><img src="https://i.imgur.com/Bh7eDEg.png" width="65" height="64.5" alt="State of Illinois Seal"/></a>
    </td>
    <td width="275" height="100%" style="vertical-align: top;">
      <span style="font-weight:700; font-size: 16px;">John Smith </span><span style="font-size: 16px; font-weight:700">(He / Him)</span>
      <br>
      <span style="font-size:15px; font-weight:700;">Digital Media Specialist</span>
      <br>
      <span style="font-size:15px; font-weight:700;">Office of My Boss</span>
    </td>
  </tr>

  <tr>
    <td colspan="2" style="border-top: 1px solid black; padding: 10px 0;">
      <span style="font-size:14px;">Office: <a style="color:#1C6AB3; padding-right:6px;" href="tel:15162843300"> 516-284-3300</a><span aria-hidden="true">|&nbsp;</span><span style="font-size:14px; padding-left:2px;">Cell: <a style="color:#1C6AB3;" href="tel:15162843300"> 516-284-3300</a></span>
      <br>
      <span style="font-size:14px; padding-right:2px;">1234 W Monroe St </span><span aria-hidden="true">|&nbsp;</span><span style="font-size:14px; padding-left:2px;">Chicago, IL 60661</span>
      </span>
    </td>
  </tr>

  <tr>
    <td colspan="2" style="padding-top: 10px;">
      <a href="https://www.facebook.com/moreycreative"><img src="https://i.imgur.com/p9Od0MU.png" alt="Facebook Icon" width="25" height="25" style="padding-right:6px; vertical-align: middle;"></a>
      <a href="https://www.linkedin.com/company/moreycreative"><img src="https://i.imgur.com/fE7B4qo.png" alt="LinkedIn Icon" width="25" height="25" style="padding-right:6px; vertical-align: middle;"></a>
      <a href="https://www.instagram.com/moreycreative/"><img src="https://i.imgur.com/NRTdN9c.png/" alt="Instagram Icon" width="25" height="25" style="padding-right:6px; vertical-align: middle;"></a>
      <a href="https://twitter.com/MoreyCreative"><img src="https://i.imgur.com/aAi8ZLc.png" alt="Twitter Icon" width="25" height="25" style="padding-right:6px; vertical-align: middle;"></a>
      <a href="https://www.moreycreative.com/inbound-and-down"><img src="https://i.imgur.com/kfXPUuX.png" alt="Podcast Microphone Icon" width="25" height="25" style="padding-right:3px; vertical-align: middle;"></a>
      <span aria-hidden="true" style="vertical-align: middle;">|&nbsp;</span>
      <a style="vertical-align: middle; color:#1C6AB3; font-weight:700; font-size: 14px;" href="https://example.com/">example.com</a>
    </td>
  </tr>
    
  </tbody>
      
</table> 
 
</body>
  
</html>

另外，复制签名时建议用Safari代替Chrome，Safari对Outlook的HTML复制兼容性更好，复制后同样选择「保留源格式」粘贴即可。

内容的提问来源于stack exchange，提问作者joebeans