Strategies for email campaigns vary, but the email newsletter lies at the heart of each. It is a sort of a decider: whether your readers will be back or ditch you and your company. But make sure that every email newsletter looks pleasing and is unobtrusive and a sort of a decider. The only difference from a traditional GUI is that you use a different medium for the command (voice vs. keyboard input).
For example, after creating a portal, the host will invite collaborators that can join the session. As the host cycle via files, guest can make edits or spectate the active workspace. After entering a portal, collaborators get their cursor so that everyone can type in the same time. Thankfully, only the host can save edits.