what happens when you restrict someone on messenger

When you restrict someone on Messenger, it limits your interactions with that person. The person can still send you messages, but they will go to your Message Request folder instead of your primary inbox, and you won't receive notifications for them. The chat thread with the person will be hidden from your main chat list, and their messages will be marked as "sent" instead of "delivered" or "read." You can read their messages without them knowing, but you won't be able to send a message or call them until you unrestrict them.