Hi, thank you for sharing the code from "Learn Google Apps Script". I'm still having an issue with the array in the loop found in sendEmail.gs. For some reason it's not recognized in GAS.

Look at the variable names in line 55, they're not colored. And when I run the code, I get an error

I'm using the same code you used, can you help me?

function emailTemplate(obj, emailTemplateSheet){
  
  var emailBody = emailTemplateSheet;
  for(let [key, value] of Object.entries(obj)){
    emailBody = emailBody.replace("{" + key +"}",value);
    Logger.log(emailBody);
  }
  
  return emailBody;
}

Thanks in advanced