HIGHLIGHT OPTION for inbox emails with customizable corresponding labels. Could form another Skills Centre option. Allows you to highlight different threads with different colours - much in the same way that Starring often works BUT with multiple colours and perhaps highlights the whole email in the main inbox. Again, similar to how Mac folders have a Colour Tag option. Very useful for sorting through, marking, and filtering groups of emails. Perhaps as an alternative or in conjunction to the Task List. This would be awesome.