While filters allow you to set up rules for moving emails to other folders, I find when I do that I often miss important emails because I watch my inbox but don't have time to regularly go through every folder. When it's time to clean out my inbox (currently have 357 unread messages), it's nice to go through them by sender. I can sort by the size of the email or the receipt date, but not by sender. I can type in a filter at the top, but I have to remember to check "Inbox" or it shows me everything. I'm not particular about the mechanism, but a few options would be: sorting by sender; having saved searches I can flip between; or making Inbox the default on searches, whether globally or through an option I can change. The saved search filters would be particularly nice, but just adding a sort option for Sender, and maybe Subject, would be nice.