@Charles you can use the Butler power up to do that by posting a comment when the card is due. Note that if your Butler power up runs as you, you won't be notified, but you can enable the power up from a different user to get around that limitation.
There is also an interface experiment floating around which allows you to configure notifications for due dates at different times, hopefully they choose to keep that!
If you had to thrive a new habit during a lockdown, what would it be? Trello
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