Search Folder - today's mail (inbox and sent items)


I’d like to have a search folder that shows all mail that I have received or sent today.
Any date fields only seem to accept literal dates, i.e. not a description like ‘today’
Also, how do I include the inbox and sent items in the search? Even ‘all folders’ would be good enough.

Of course, there may be a way of doing this without search folders.

All suggestions appreciated.

This is already implemented in the version 9 beta: