I like to use access keys via context menus sometimes, but when I right-click on the Spam folder, both "Search Messages" and "Empty Spam" have "S" as their access key, so I can't just hit one letter to empty spam.
I often leave the message list pane set to filter on "unread", in which case clicking on the Windows notification popup for a new email displays the message, but the keyboard doesn't have focus on it. I think the email message should have focus so th...