Use "Due date" of task for trigger a workflow

[MvonBüren]

As I want to sendout an reminder-email, when a task for our sales team is due (e.g. ask the customers for the latest updates), I would like to use the due date of the task as trigger. At the moment it is not possible.

[LanaTDC]

This would be a very useful trigger. also the ability to get an alert if a due date has been changes would be useful