Display Smart Folders - they no longer appear with the new version
Smart Mailboxes are really useful - please add the ability to add these in the Favourites section (i.e. at the top of the side bar) and allow users to set the folders as required - for example, using boolean a folder might be: "unread emails OR flagged emails OR emails in the inbox(es)"
It's important to note that the new filtering of a folder is not a replacement. The filtering only filters what's loaded in the view. If I have 10,000 message in my inbox, they are not all loaded in the New Outlook and therefore filtering on flagged or unread DOES NOT WORK. It will only show more recent items that meet the filtering criteria.
andrew glynn commented
Seeing as smart folders aren't currently enabled, there doesn't currently seem a way to view the entire unread count across folders.
Same goes for 'all flagged mail', 'all mail from today' etc.
Smart searches/folder: Big feature missing! Would be a reason to go back to the old version or switch to different mail program. How shall I find my flagged / unread items??
Folder hierarchy is old fashioned, metadata should be all that's required to organise items. If you make search prominent why take smart folders and saved searches away?
Useful tool to have
This is a really critical one for me — gotta be able to create and use smart folders/saved searches.
Not seeing Smart Folders option(s) which I heavily rely on.
Ryan Holland commented
"New Outlook" appears to not have smart folders. I have critical uses for this.