I'm disappointed to discover that the only way I can identify what folder an email is in is by accessing Yahoo! on a desktop/laptop. Even the webmail site in a mobile browser doesn't now show this information.
Instead of quickly filing new emails in the same folder as previous emails from the same sender, my Inbox is now clogged-up with messages I can't move until I can access a desktop/laptop.
Removing this feature was a backward step for which I can see no possible reason.