Facebook adds Reactions and Mentions to Messenger app on Android and iOS
But let's take a look at how “Mentions” work, the new feature that's supposed to immediately notify someone he or she has been mentioned in a conversation. In fact, it's quite easy and if you've been using Twitter before you'll feel right at home.
Furthermore, whenever a person is mentioned, they will receive a new type of notification that is meant to let them know they were called out specifically. It will allow mentioned persons to reply faster to questions, as they will be able to jump right back into the conversations.
Keep in mind that everyone participating in the conversation will be able to see the mentioned person, and while all will be getting a notification like before, only the specified person in the group will be notified that they have been mentioned.
Message Reactions are even more important, as Messenger users will now be able to react to an individual message with a particular emotion.
Just like Mentions, it's very easy to use, as you'll only need to press and hold any message, and tap to choose the desired reaction (love, smile, wow, sad, angry, yes).
According to Facebook, Messenger fans can use Reactions in one on one, as well as group conversations. The new feature is taking advantage of the Messenger emojis and can be used to react on just about any type of message including videos, GIFs, stickers, or simple text.
source: Facebook
Things that are NOT allowed: