In order to simplify communication in the project we have a space on the project start page where everyone can talk about project related matters. Members who are mentioned in these conversations get email notifications and see the conversation on the Workspace start (if the "my mentions"-widget is active). The email notifications are now sent with sender "workspace name". We also make notifying the project member group that contains all members easier by always displaying it at the top of the group list when you type @ in your post or comment.