title: Gmail : URL to reply to specific email conversation
body: <p>In Gmail, I have a link to an email conversation :
  <a href="https://mail.google.com/mail/u/1/#inbox/FMfcgzGmvpJWZJvzHpvrqbTnZgrfHTlg" rel="nofollow noreferrer">https://mail.google.com/mail/u/1/#inbox/FMfcgzGmvpJWZJvzHpvrqbTnZgrfHTlg</a>
  I would like to generate a link that would :</p>
  <ul>
  <li>open this conversation</li>
  <li>click on &quot;reply to all&quot; in the last email of the conversation</li>
  <li>add a specific message in the body.</li>
  </ul>
  <p>If not possible with a link, maybe this could be solved with javascript?
  Here's the context (simplified) :</p>
  <ul>
  <li>We have a google spreadsheets where we would paste links to emails in the 1st column.</li>
  <li>In an 2nd column we have some data</li>
  <li>In a 3rd column, we generate messages depending on the data of the 2nd column.</li>
  </ul>
  <p>=&gt; I want to open the link in a new window, reply to the last email and paste the content of the 3rd column in the body.</p>
  <p>Would this be possible ?</p>