title: How can I reply a going thread to a specific group of emails?
body: <ol>
  <li>I am using Google App Scripts to search and reply to a going emails.</li>
  <li>Let's say I can use GmailApp.search to search a thread by subject already and I want to reply to the first search result</li>
  <li>I want to reply to: and cc: to specific people every time search and reply this going email. Like: to: a@gmail.com + cc: b@gmail.com, c@gmail.com.</li>
  <li><p>Now I am using thread[0].replyAll because I don't know how to do as above. But always it reply to all the people of the last message of the going email ( even including me in to the cc or me in the to: if I am the last one doing message of the total email)</p>
  
  <p>var subjectsearch =brandname+"/ SAMBU"+"/ MATERIAL REQUEST/ ROUND "+round+'/ '+subjectname;
  var threads = GmailApp.search('subject:('+subjectsearch+')');
  if (threads.length>0){
            threads[0].replyAll(messagePrefix,{from:"kevin@sambu.sewing.co.kr",htmlBody: message, })</p></li>
  </ol>
  
  <p><a href="https://i.stack.imgur.com/cuh5J.png" rel="nofollow noreferrer">first message</a>
  <a href="https://i.stack.imgur.com/Pb7rH.png" rel="nofollow noreferrer">If I replyall it will look like this, I dont want to send to me but always a specific to: and cc: if I want</a></p>