Currently we can get Email Notification at To-Do's due date on the day. But we want to get this notification as reminder, before To-Do's due data is coming.
In additional, it is better for us that we can customize when we get notification.
Thank you for your idea. Currently to-do notifications will look two days in advance for to-dos due soon. Any to-dos that are due in the next two days will be included in reminder notifications.