Communication services enable two or more users to communicate electronically using multiple modes of communication. Conversations between groups of users are common, where one or more communications may be exchanged repeatedly over a period of time. In some scenarios, a communication desired to be conveyed by a participant in a conversation may be a simple endorsement, such as receipt acknowledgment and various levels of social activity actions and/or gestures, which may be useful for other participants of the conversation to see as well. Provision of endorsement indications in communication environments may enable the participant to select an endorsement for a communication or a conversation without explicitly replying to the communication or conversation, where an endorsement indication based on the selected endorsement may be transmitted and displayed to the other participants of the conversation through an endorsement module of the communication service.