Systems and methods for emotion detection and emotion-based moderation based on voice inputs are provided. A user emotion profile may be stored in memory for a user. The user emotion profile may include one or more moderation rules that specifies a moderation action responsive to one or more emotional states. A current communication session associated with the user and one or more other users may be monitored based on the user emotion profile. An emotional state detected as being associated with a subset of the messages may trigger at least one of the moderation rules by corresponding to at least one of the emotional states specified by the user emotion profile. A presentation of at least one of the messages in the subset being provided to the user device may be modified in accordance with the moderation action specified by the user emotion profile.