Your community may need daily systemwide messages that reach all members. Perhaps you share a daily reflection or offer an activity of the day that enhances your members’ community experience. Systemwide messages can, of course, be sent less frequently. Some communities anticipate systemwide communication from the adminstrators only when there is a major event announcement or the occasional down period for network maintenance.
Whatever the frequency, systemwide messages should be short and clearly communicated with members. Brevity and clarity are key so that members actually read your missive rather than ignoring what you’ve got to say.