I sort of (jokingly mind you) consider the new interface twist a much needed category theoretic twist to the interface. Now we can specify mappings from a label

I sort of (jokingly mind you) consider the new interface twist a much needed category theoretic twist to the interface. Now we can specify mappings from a label to a set of emails (the drag the email to the label action), and mappings from an email to a set of labels (the drag the label to the email action)