1. A computing device to transition a command user interface (UI) between a toolbar UI and a full menu UI based on a use context, the computing device comprising: a display device; a memory configured to store instructions associated with a messaging application; one or more processors coupled to the memory and the display device, the one or more processors executing the messaging application in conjunction with the instructions stored in the memory, wherein the messaging application includes: a rendering engine configured to: detect a request to interact with a message; identify a presentation mode based on the use context associated with the request, wherein the presentation mode includes one of a reading mode and an authoring mode; generate a command UI based on the identified presentation mode, wherein the command UI includes one of the toolbar UI and the full menu UI; and display, on the display device, the command UI in proximity to the message within a messaging application UI.