moayadhani

var ui = SpreadsheetApp.getUi();
function onOpen(e){
  
  ui.createMenu("Gmail Manager").addItem("Get Emails by Label", "getGmailEmails").addToUi();
  
}

function getGmailEmails(){
  var input = ui.prompt('Label Name', 'Enter the label name that is assigned to your emails:', Browser.Buttons.OK_CANCEL);