I earmarked two Pomodoro to clear my inbox this morning, and when I got half way through the second I was done.
The Pomodoro Technique manual says that this presents an opportunity to 'over learn' - and continue working, thereby increasing the quality of whatever it is you are working on.
I can understand this if working on a document - which can obviously be checked for copy errors / grammar etc, but email is a different beast - emails have been dispatched and my inbox is clear. I'm unlikely to embark on clearing out deleted items for example when there is more pressing work to do. Just unclear how to categorize this in 'number of Pomodoro achieved' today etc!