Block Users in WordPress Chat: User-to-User Blocking
Every messaging surface eventually deals with the same UX requirement: let members opt out of messages from specific other members, without involving an admin. WhatsApp, Signal, Telegram, Discord, Slack — all of them have a "Block this user" option in the conversation menu. Better Messages has the same: users block each other directly, the block is one-directional, and admins can control which roles are allowed to block and which roles are immune to being blocked.