Using New Outlook on Windows for professional communication and productivity
I have much the same problem. Sent mails either get stuck in Drafts or occasionally show up in a random subfolsder. Attempts to send them from Drafts or the subfolder don't work. The only fix seems to be reverting to the old Outlook, when it's simple to fix the problem manually (but annoying to have to do it). The problem is frustrating enough for me to have abandoned using new Outlook until I hear what the fix is.
Roger