Message propriety determination and alert presentation on a computing device

Technology is disclosed for controlling the presentation of electronic messages on personal computing devices (i.e., user devices). The technology reviews a first electronic message to be sent. The technology determines any of a set of previously received electronic messages that are related to the first electronic message, and comparing the first electronic message to be sent to the determined set of previously received electronic messages related to the first electronic message. Based at least on the comparing, the technology compares the propriety of sending the first electronic message. The previously received electronic messages may be, in some embodiments, a user message model or a group message model. Embodiments also include generating an alert of the potential for the first electronic message to be outside the parameters of the user model, the message model or the group message model.