Respond to feedback

Coding level: Beginner
Duration: 15 minutes
Project type: Automation with a custom menu and an event-driven trigger


  • Understand what the solution does.
  • Understand what the Apps Script services do within the solution.
  • Set up the script.
  • Run the script.

About this solution

Automatically create draft email replies to feedback from Google Forms. This solution focuses on course feedback from students, but you can apply it to any use case for which you receive feedback via Google Forms.

Form submission responses being sent from Gmail

How it works

The script installs an event-driven trigger that runs each time a user submits a form. With each form submission, the script creates an email draft in Gmail. The email is addressed to the person who submitted the form and includes the form responses and a generic thank-you message. You can edit the email before you send it.

Apps Script services

This solution uses the following services:

  • Script service–Installs the event-driven trigger that fires when someone submits a form.
  • Spreadsheet service–Sends the form responses to Gmail.
  • Gmail service–Creates the email draft with the thank-you message and form responses.


To use this sample, you need the following prerequisites:

  • A Google Account (Google Workspace accounts might require administrator approval).
  • A web browser with access to the internet.

Set up the script

Click the following button to make a copy of the Respond to feedback sample spreadsheet. The Apps Script project for this solution is attached to the spreadsheet.
Make a copy

Run the script

  1. Click Form reply tool > Enable auto draft replies. You might need to refresh the page for this custom menu to appear.
  2. When prompted, authorize the script. If the OAuth consent screen displays the warning, This app isn't verified, continue by selecting Advanced > Go to {Project Name} (unsafe).

  3. Click Form reply tool > Enable auto draft replies again.

  4. Click Tools > Manage form > Go to live form.

  5. Fill out the form and click Submit.

  6. Open Gmail and check your drafts. You should have a new draft with the form response.

Review the code

To review the Apps Script code for this solution, click View source code below:

View source code

// To learn how to use this script, refer to the documentation:

Copyright 2022 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.

 * Creates custom menu for user to run scripts.
function onOpen() {
  let ui = SpreadsheetApp.getUi();
  ui.createMenu('Form Reply Tool')
      .addItem('Enable auto draft replies', 'installTrigger')

 * Installs a trigger on the Spreadsheet for when a Form response is submitted.
function installTrigger() {

 * Creates a draft email for every response on a form
 * @param {Object} event - Form submit event
function onFormSubmit(e) {
  let responses = e.namedValues;

  // parse form response data
  let timestamp = responses.Timestamp[0];
  let email = responses['Email address'][0].trim();

  // create email body
  let emailBody = createEmailBody(responses);

  // create draft email
  createDraft(timestamp, email, emailBody);

 * Creates email body and includes feedback from Google Form.
 * @param {string} responses - The form response data
 * @return {string} - The email body as an HTML string
function createEmailBody(responses) {
  // parse form response data
  let name = responses.Name[0].trim();
  let industry = responses['What industry do you work in?'][0];
  let source = responses['How did you find out about this course?'][0];
  let rating = responses['On a scale of 1 - 5 how would you rate this course?'][0];
  let productFeedback = responses['What could be different to make it a 5 rating?'][0];
  let otherFeedback = responses['Any other feedback?'][0];

  // create email body
  let htmlBody = 'Hi ' + name + ',<br><br>' +
    'Thanks for responding to our course feedback questionnaire.<br><br>' +
      'It\'s really useful to us to help improve this course.<br><br>' +
        'Have a great day!<br><br>' +
          'Thanks,<br>' +
            'Course Team<br><br>' +
              '****************************************************************<br><br>' +
                '<i>Your feedback:<br><br>' +
                  'What industry do you work in?<br><br>' +
                    industry + '<br><br>' +
                      'How did you find out about this course?<br><br>' +
                        source + '<br><br>' +
                          'On a scale of 1 - 5 how would you rate this course?<br><br>' +
                            rating + '<br><br>' +
                              'What could be different to make it a 5 rating?<br><br>' +
                                productFeedback + '<br><br>' +
                                  'Any other feedback?<br><br>' +
                                    otherFeedback + '<br><br></i>';

  return htmlBody;

 * Create a draft email with the feedback
 * @param {string} timestamp Timestamp for the form response
 * @param {string} email Email address from the form response
 * @param {string} emailBody The email body as an HTML string
function createDraft(timestamp, email, emailBody) {
  console.log('draft email create process started');

  // create subject line
  let subjectLine = 'Thanks for your course feedback! ' + timestamp;

  // create draft email
        htmlBody: emailBody,


This sample was created by Ben Collins, Educator at and Google Developer Expert.

This sample is maintained by Google with the help of Google Developer Experts.

Next steps