Google Apps Scripts使用触发器自动发送电子邮件(不重复)

function sendEmail(to, subject, body) {
  var emailSent = PropertiesService.getScriptProperties().getProperty('emailSent');
  if (emailSent !== 'true') {
    var emailAddress = to;
    var message = subject;
    var emailBody = body;

    var emailOptions = {
      name: 'Your Name',
      replyTo: 'your.email@example.com'
    };

    GmailApp.sendEmail(emailAddress, message, emailBody, emailOptions);

    // 设置属性，表示电子邮件已发送
    PropertiesService.getScriptProperties().setProperty('emailSent', 'true');
  }
}