Run a Gmail Google Apps Script daily at 8:00, 12:30, 17:00
Use nearMinute() and atHour(): const createTrigger = ([hour, minute])=> ScriptApp.newTrigger(“myFunction”) .timeBased() .atHour(hour) .nearMinute(minute) .everyDays(1) .create(); [[8,0],[12,30],[17,0]].forEach(createTrigger)