关于 Google Apps 在 Gmail 邮件正文中编写内嵌图像脚本

所以我有一封电子邮件草稿，如下所示：

and this is how my email looks after mailing it

I can find those images in email as attachment like this

这是我正在使用的脚本，所以这里的任何人都可以告诉我我是否做错了什么以及这段代码中有什么问题，因为我对谷歌应用程序脚本很了解，我刚刚从我无法找到的堆栈中找到了这个脚本该帖子再次出现，因此无法上传其链接。

  function main( ) {

  var thread = GmailApp.getDrafts()[0];
  var TemplateMessage = thread.getMessage();

  Logger.log(TemplateMessage.getSubject());

  var emailTemplate = TemplateMessage.getBody();
  var rawContent = TemplateMessage.getRawContent();
  var attachments = TemplateMessage.getAttachments();

  var regMessageId = new RegExp(TemplateMessage.getId(), "g");
  if (emailTemplate.match(regMessageId) != null) {
    var inlineImages = {};
    var nbrOfImg = emailTemplate.match(regMessageId).length;
    var imgVars = emailTemplate.match(/<img[^>]+>/g);
    var imgToReplace = [];
    if(imgVars != null){
      for (var i = 0; i < imgVars.length; i++) {
        if (imgVars[i].search(regMessageId) != -1) {
          var id = imgVars[i].match(/realattid=([^&]+)&/);
          if (id != null) {
            var temp = rawContent.split(id[1])[1];
            temp = temp.substr(temp.lastIndexOf('Content-Type'));
            var imgTitle = temp.match(/name="([^"]+)"/);
            if (imgTitle != null) imgToReplace.push([imgTitle[1], imgVars[i], id[1]]);
          }
        }
      }
    }
    for (var i = 0; i < imgToReplace.length; i++) {
      for (var j = 0; j < attachments.length; j++) {
        if(attachments[j].getName() == imgToReplace[i][0]) {
          inlineImages[imgToReplace[i][2]] = attachments[j].copyBlob();
          attachments.splice(j, 1);
          var newImg = imgToReplace[i][1].replace(/src="[^\"]+\"/, "src=\"cid:" + imgToReplace[i][2] + "\"");
          emailTemplate = emailTemplate.replace(imgToReplace[i][1], newImg);
        }
      }
    }
  }
  //////////////////////////////////////////////////////////////////////////////
  var message = {
    htmlBody: emailTemplate,
    subject: TemplateMessage.getSubject(),
    attachments: attachments,
    inlineImages: inlineImages
  }

  GmailApp.sendEmail(Session.getActiveUser().getEmail(), TemplateMessage.getSubject(), "", message);
}