Email yourself tomorrow's calendar agenda

1 · Prepare

Put these pieces in place

• Use the Google account whose main calendar holds the events you want to see.
• Create a standalone Apps Script project at script.google.com, or use any project you already have.
• Keep both functions below in the same project, because the trigger looks up the second one by name.

2 · Review before running

What the script can access and change

3 · Copy

Paste this into the Apps Script editor

Create or open a script file, replace the example values marked above, then save the project.

const SEND_HOUR = 18; // The trigger runs during this hour, in the project time zone. 18 means the 6 PM hour.
const TIME_FORMAT = 'h:mm a'; // This prints times like 9:30 AM. Use HH:mm for a 24 hour clock.
const HANDLER_FUNCTION_NAME = 'emailTomorrowsAgenda'; // The setup function looks for this name so it never installs a second trigger.

function createAgendaTrigger() {
  const alreadyInstalled = ScriptApp.getProjectTriggers().some((trigger) => {
    return trigger.getHandlerFunction() === HANDLER_FUNCTION_NAME;
  });
  if (alreadyInstalled) return;

  ScriptApp.newTrigger(HANDLER_FUNCTION_NAME)
    .timeBased()
    .everyDays(1)
    .atHour(SEND_HOUR)
    .create();
}

function emailTomorrowsAgenda() {
  const tomorrow = new Date();
  tomorrow.setDate(tomorrow.getDate() + 1);

  const events = CalendarApp.getDefaultCalendar().getEventsForDay(tomorrow);
  if (events.length === 0) return;

  const timeZone = Session.getScriptTimeZone();
  const lines = events.map((event) => {
    if (event.isAllDayEvent()) return 'All day: ' + event.getTitle();
    const startText = Utilities.formatDate(event.getStartTime(), timeZone, TIME_FORMAT);
    const endText = Utilities.formatDate(event.getEndTime(), timeZone, TIME_FORMAT);
    return startText + ' to ' + endText + ': ' + event.getTitle();
  });

  const subject = 'Agenda for ' + Utilities.formatDate(tomorrow, timeZone, 'EEEE, MMMM d');
  GmailApp.sendEmail(Session.getEffectiveUser().getEmail(), subject, lines.join('\n'));
}

4 · Run

Follow these steps in order

1. Paste both functions and save

   Paste both functions over the starter code and save. createAgendaTrigger installs the schedule. emailTomorrowsAgenda is the work that runs each evening.

2. Test the agenda by hand

   Choose emailTomorrowsAgenda in the function dropdown above the code, then click Run. Approve access when Google asks. This sends one email to you and changes nothing on your calendar, so you can repeat it. If tomorrow has no events, no email is sent.

3. Install the daily trigger

   Choose createAgendaTrigger and click Run once. Running it again does not add a second trigger, because it stops when a trigger for emailTomorrowsAgenda already exists.

4. Check the schedule

   Click Triggers, the clock icon in the left sidebar. emailTomorrowsAgenda is listed as a day timer for the 6 PM to 7 PM hour.

5 · Confirm

How to tell it worked

You receive an email with a subject such as Agenda for Tuesday, March 4, and one line per event, either a time range and title or All day and the title.

If the result is different

Troubleshooting

No email arrives after the test run.

Add a test event for tomorrow in Google Calendar and run emailTomorrowsAgenda again. The script sends nothing when tomorrow has no events on your main calendar.

The times in the email are off by some hours.

Open Project Settings, the gear icon in the left sidebar, and set the time zone to yours. Utilities.formatDate uses the project time zone, not the one on your computer.

The email arrives at an unexpected hour.

To move it, delete the trigger under Triggers, change SEND_HOUR, save, and run createAgendaTrigger again. A day timer runs some time inside the chosen hour, not exactly on the hour.

The agenda is missing events from a shared calendar.

Replace CalendarApp.getDefaultCalendar() with CalendarApp.getCalendarById and the ID from Google Calendar settings. The script reads only your main calendar.