Filter emails
Feature summary
Being able to filter emails by unread, or any other status, would help users manage their emails. Most email clients include some sort of way to do this and it would help productivity in managing inboxes. It can be difficult and time consuming to scan and find the unread messages among hundreds/thousands of emails.
How would you like it to work?
I'd imagine some sort of advanced search interface with the ability to save searches, and some default filters available like "show all unread".