Note: Any archives created in Outlook will show up in the navigation pane on the left side of the screen as an archived folder. Under Info tab (1), click Tools (2) Choose Clean Up Old Items from the dropdown (3) From the Archive window, we can now manually trigger the AutoArchive process.
REMOVE ARCHIVE FOLDER FROM OUTLOOK 365 FOR MAC
Quit any active desktop email apps Outlook for Mac and Mail.app. Per my test, the folder Deleted items cannot be deleted as mentioned, but the custom folders can be deleted, if the folders are subfolders of Deleted items, they can be deleted one tine, if the folders are the subfolders of Online, it can be deleted by two times as below screenshot: Hope it.
Email can fill your Outlook inbox quickly – new messages, replies, and forwards.