Abstract: Aspects of the present disclosure are directed to an avatar reaction system in which messaging can be initiated via an avatar. Aspects are also directed to automated controls for connecting an artificial reality trigger to an action. Aspects are further directed to adding a like to a gesture target based on interpreting a gesture. Aspects are yet further directed to administering a conversation thread, for a game, over a messaging platform. Additional aspects are directed to connecting a game with a conversation thread to coordinate game challenges. Further aspects are directed to establishing a shared space for a 3D call with participants' hologram representations mirrored as compared to how images of the participants are captured. Yet further aspects of the present disclosure are directed to scanning a physical space to onboard it as a messaging inbox and providing the scanned space for delivery point selection to a message sender.