JSFiddle - React, Tailwind, and code Playground

JavaScript

var tmr;
$(document).ready(function() {
    i=0;
    tmr=setInterval(function(){
        if(i<20)
        {
            SendEmail(i);
            alert("Sent "+i)
            i++;
        }else
        {
            clearInterval(tmr);
        }
        
    },5000)
              
 });

function SendEmail(id) {
    
  $.get("mimesender.php?id="+id
  , function(data) {
      var toAppend = "<span>     " + data + "</span>"
      $("#sentTo").append(toAppend);
      }
  );
}