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The RSVP form submits data to a Google Sheet via a Google Apps Script web app. This page walks you through creating the sheet, deploying the script, and verifying that everything works before you publish your site.

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Sheet columns

The setup() function writes the following headers into row 1 of the RSVP_responses sheet. Every form submission maps directly to these column names.
ColumnField nameDescription
ATimestampAuto-generated UTC+8 timestamp
BnameGuest’s full name
Crelationfriends-groom, friends-bride, or other
Dattendanceyes or no
EguestsNumber of attending guests
FdietaryMeal preference (“, 1 = vegetarian, 2 = fasting)
Gvegetarian-mealsNumber of vegetarian meals needed
Hchildren-seatsyes or no
Ichildren-seats-countNumber of children’s seats
Jinvitationyes or no (paper invitation)
KaddressMailing address for paper invitation
LmessageMessage to the couple
MemailGuest’s email address

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Setup steps

1

Create a new Google Sheet

Go to sheets.google.com and create a new spreadsheet.Rename the first sheet tab (at the bottom of the page) to exactly:
RSVP_responses
This matches the constant in the script:
var SHEET_NAME = "RSVP_responses";
2

Copy the Sheet ID

Look at the URL in your browser. The Sheet ID is the long alphanumeric string between /d/ and /edit:
https://docs.google.com/spreadsheets/d/YOUR_SHEET_ID_HERE/edit
Copy and save this ID — you will need it in the next step.
3

Open Apps Script and paste the code

In your spreadsheet, click Extensions → Apps Script.A new tab opens with the Apps Script editor. Delete all existing code in the editor, then paste the entire contents of google-apps-script.js from your project repository.
4

Update the SHEET_ID variable

Near the top of the script, find and replace the placeholder Sheet ID with the one you copied:
// REPLACE THIS WITH YOUR OWN SHEET ID
var SHEET_ID = "YOUR_SHEET_ID_HERE";
For example:
var SHEET_ID = "11Sp1j-FPY18T-WCTdqSCvMhP9ANqaCX12QXSsFlUhh8";
5

Update the notification email address

In the sendEmail() function, replace the email address with your own so that you receive RSVP notifications:
var johnnyEmail = 'your-email@gmail.com';
The script sends two emails on each submission:
  • A confirmation email to the guest (if they provided their address)
  • An admin notification email to this address
6

Save and run setup()

Press Ctrl+S (or Cmd+S on Mac) to save the script.In the function dropdown at the top of the editor, select setup, then click Run.You will be prompted to grant permissions — click Review permissions, choose your Google account, and click Allow.The setup() function:
  • Stores the spreadsheet ID in script properties
  • Creates the RSVP_responses sheet if it does not exist
  • Writes all 13 column headers with orange formatting
  • Freezes the header row
  • Sets column widths for readability
  • Adds dropdown data validation to key columns
Run testSetup() after setup() to do a full end-to-end verification. It tests spreadsheet access, sheet access, and sends a sample email with test data so you can confirm the notification format looks correct before going live.
7

Deploy as a web app

Click Deploy → New deployment.In the dialog:
  1. Click the gear icon next to Select type and choose Web app
  2. Set Execute as to Me
  3. Set Who has access to Anyone
  4. Click Deploy
Copy the Web app URL that appears — you will paste it into script.js in the next setup stage.
The deployment access must be set to Anyone. If it is set to “Anyone with Google account” or more restrictive, the RSVP form will appear to submit successfully in the browser but no data will be written to the sheet and no emails will be sent — the failure is completely silent from the guest’s perspective.
8

Copy the web app URL

The deployed URL follows this pattern:
https://script.google.com/macros/s/YOUR_SCRIPT_ID/exec
Save this URL. You will use it when configuring the website in the next section.

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