checkReminder script here can be for sending emails when a task is due. This is based on script created agent86ix here - https://www.withoutthesarcasm.com/automating-google-spreadsheets-email-reminders/.
- Create a google spreadsheet from template - "To-do List".
- Open the script editor from "Tools" menu.
- Paste the contents of checkReminder.gs to the script editor. Replace abc@abc.com with your email(s).
- Save the script.
- Setup "Current Project Trigger's" to run the script daiy.
- Run the script once to test.