Integration of a group-based communication platform into a third-party application is described. In an example, an affordance associated with the group-based communication platform can be presented via a user interface of the third-party application. Based at least in part on detecting an input associated with the affordance, at least the message can be retrieved from the group-based communication platform. The message can be presented via the user interface of the third-party application, wherein one or more messages associated with the group-based communication platform, including the message, are presented via the user interface of the third-party application.