DueSlotAdd a Planner plan to an Outlook calendar
The built-in “Add plan to Outlook calendar” action in Planner no longer works. Microsoft retired that iCalendar feed and did not ship a replacement.
DueSlot creates a calendar named “Planner (DueSlot)” in your mailbox and adds an event for each task that has a due date. Free is manual sync; Pro keeps it updated in the background.
Work or school accounts and basic Planner plans only. More about the retired feed.