Method of generating customized graphics having reactions to electronic message content starts with application server causing a communication interface for a communication session to be displayed at a first client device and at a second client device, respectively. The communication session is between a plurality of client devices. The communication interface includes a chat presence bar that includes a plurality of presence indicators associated with the client devices, respectively. Application server receives content for an electronic message from first client device or second client device and generates a customized graphic based on the content for the electronic message and a user identifier for first client device. Application server causes the customized graphic to be displayed on the chat presence bar of the communication interface displayed on the second client device. The customized graphic included in a first presence indicator associated with the first client device. Other embodiments are disclosed.