Using email to add to parking lot

I just started using the email feature to add tasks to the my calendar. It would be nice if I could use this feature to add items to parking lot lists. A lot of times, I’ll have an idea pop into my head. I just want to get it onto the parking lot before I forget. I don’t want it on the calendar.

If there was a way to demote a task from the calendar to a parking lot list easily, this would suffice too.