Automation is a key aspect of efficient workflows, and Google Apps Script provides an excellent platform to automate various tasks, including sending emails. A common use case for automation is sending birthday emails to contacts on specific dates. This can be easily achieved using Google Apps Script, allowing users to set up an automatic notification system that sends emails from a predefined list on birthdays.
In this article, weโll explore how you can use Google Apps Script to automate birthday email notifications, ensuring you never miss an opportunity to send your greetings.
What Is Google Apps Script?
Google Apps Script is a cloud-based scripting platform that allows users to extend and automate Google services such as Gmail, Google Sheets, Google Calendar, and more. It enables users to automate workflows by writing simple JavaScript-based scripts that interact with these services.
With Google Apps Script, you can automate tasks like sending emails, manipulating spreadsheets, creating documents, and scheduling events. In this case, the goal is to set up a system that automatically sends birthday greetings to contacts on their special day.
How to Set Up a Birthday Email Automation
To automate birthday emails, you will need to create a Google Apps Script that triggers an email to be sent on the exact date of a personโs birthday. Hereโs a breakdown of how the process works:
- Storing Contact Information
The first step is to store the contact information of the individuals whose birthdays you want to track. Typically, youโll store this data in a Google Sheet, with columns for the personโs name, email address, and birthday.
Example columns in the sheet:
- Name
- Birthday (in MM/DD format)
- Writing the Script
Next, youโll write a Google Apps Script that reads from the Google Sheet and checks if todayโs date matches any birthdays in the list. If a match is found, the script will automatically send an email to that person.
Hereโs a basic script outline:
javascript
Copy code
function sendBirthdayEmails() {
var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
var today = Utilities.formatDate(new Date(), Session.getScriptTimeZone(), ‘MM/dd’);
var data = sheet.getDataRange().getValues();
for (var i = 1; i < data.length; i++) {
var name = data[i][0];
var email = data[i][1];
var birthday = Utilities.formatDate(new Date(data[i][2]), Session.getScriptTimeZone(), ‘MM/dd’);
if (today == birthday) {
MailApp.sendEmail(email, “Happy Birthday!”, “Happy Birthday, ” + name + “!”);
}
}
}
This script:
- Accesses the data in the Google Sheet.
- Compares todayโs date with the birthday in the list.
Sends an automated email using Gmailโs MailApp service.

- Setting Up Triggers
To make sure the script runs automatically, youโll need to set up a trigger that runs the script every day. This ensures that the script checks for birthdays and sends the email without manual intervention.
Hereโs how to set up the trigger:
- Open the Script Editor.
- Go to Edit > Current projectโs triggers.
- Click Add Trigger and set the function to run daily.
This way, the script will automatically check for birthdays each day and send the corresponding emails.

Benefits of Automating Birthday Emails
By automating birthday emails using Google Apps Script, you can ensure that greetings are sent promptly and consistently. Here are some of the main benefits:
- Time-Saving: Automation saves you the effort of manually remembering and sending birthday emails, freeing up time for other tasks.
- Personalization: The script can be customized to include personalized greetings or additional content in the email, making each message feel thoughtful and intentional.
- Reliability: With a daily trigger in place, the system ensures that no birthdays are missed, as long as the data in the sheet is up to date.
Enhancing the Script
There are several ways you can extend and enhance this basic birthday email automation:
- Custom Email Templates: You can design HTML email templates to make the birthday greetings more visually appealing.
- Multiple Triggers: Set different triggers for different time zones or regions to ensure timely delivery of emails across the globe.
- Error Handling: Implement error handling in the script to catch any issues with sending emails, such as invalid email addresses or quota limits.

Conclusion
Automating birthday emails with Google Apps Script is a simple yet effective way to maintain relationships and show thoughtfulness toward your contacts. By using a Google Sheet to store information and setting up a script with a daily trigger, you can ensure that emails are sent automatically on the correct date. This not only saves time but also ensures reliability and personalization in your communication.