Shortcut for Sorting Mail

Hi,

I am pleased that under Mountain Lion there is now a quick way to get to the top of your inbox, however, are there any shortcuts for sorting the mail by date, sender, etc.? I frequently need to re-order the inbox and whilst the dropdown menu is available it is quite a small dropdown and can be a bit fiddly. If there was keyboard shortcut assigned then I would also be able to add a gesture as well, but it seems the only way to chagne the order is via the dropdown menu.

Any suggestions?

Thanks