There is currently some spam attacks on direct messages on Nostr, some users is receiving messages, each for different account so simply banning is not a good solution, neither is reporting.
Each account is only delivering one message, so you can "Delete" (removes locally) the chats one by one, or you can purge them all from the new Manage Inbox dialog.
Also added Web of Trust filter on the "Others" tab, helping you sort your inbox from non-following profiles.
If someone does not have a rank score yet, that you have already chatted with, they will be included in the "0" rank score and not hidden.
Watch this video to learn how it works: