Reactions and direct mentions Added by facebook to Messenger.
One year after the introduction of the Social Feedback buttons, Facebook announces their arrival in its mailbox and in Mentions.
These reactions, explains Facebook, allow to express simply and simply an emotion. You can add funny or amazed faces to photos, videos, GIFs, stickers, and messages received via Messenger when you are talking to two or more.
Messenger has also adopted Mentions, which seem to work the same way they would on Slack. To mention someone, type the @ symbol before their name to inform them to join the chat. This pings the person with an entirely different notification so they are aware that they are searched in a specific conversation. Of course, if you are just not in your buddies, you can disable this notification entirely.