Training and reaching the masses

So one of the question we have is how to reach our users of the EMR system for training/updates. At our hospital there are two email systems, the university email and the hospital email. The hospital has access to the hospital email not university email, but most physicians check only the university email. So email is not as efficient. We could use the mass paging system, but everyone would not be so happy being pages when they were home and off from a long night of call. We have tried fliers, but people become over- stimulated with to so many fliers and don't really pay attention to them anymore. There was a website but it became un-organized and filled with too much information, that people do not trust it anymore. An idea was to use facebook. If facebook was pushed out as a site that employees could go to to find videos on training and important updates, maybe that would be a way to keep people updated. Especially, with everything going into the feeds. However, facebook can't be reached on campus so it probably isn't a good idea to have a program people can't access at their workplace. The question is how do we find a peaceful combination between security and social medias? The other question is how do really reach people with all of the different types of medias we have? With having too many communication choices, are we actually not able to communicate at all?