Update the search function.
Please update the search function and add the "search all mailboxes" function again. Search should also be automatic, no enter-hitting.
Search All Mailboxes is now in the latest Insider Fast build of the new Outlook for Mac. Select this option when choosing a search scope while searching. Thanks for your feedback!
Tim Hornung commented
In prior version of Outlook, we could specific that all mail would be searched. This would expand the search outside the current mailbox and would search items stored locally
Without it, the older Outlook version is much better,
Philip Esser commented
Search all mailboxes like in the old versions. Not just folders.