Abstract: Configurations of the subject technology integrate with an online social networking service in order to manage membership of contacts within one or more social circles provided by the online social networking service. In one example, a button or other similar graphical element is provided to provide this functionality in a widget displayed in a user's e-mail application. The widget in one example is displayed in a conversation thread view of a conversation including one or more different e-mails from one or more participants. For a selected participant of the conversation thread, the aforementioned button is initially rendered to provide an indication of the participant's inclusion in one or more of the user's social circles. Selecting or hovering over the aforementioned button further allows the user to add the conversation participant to the user's social circles.