The flexibility of queueing content in order by priority, user preference or date received allows us to create an effective solution for our customers where previously we had not been able to offer them anything that they were looking for. We are using this functionality as part of our customer journey but there doesn't appear at present any way it can be used when creating email campaigns - perhaps I just haven't found one yet? Our primary use case right now has nothing specifically related to queues themselves (although if you want to know about what we're doing then take a look here). Instead its allowing users who don’t have time / need immediate access to information from a complex site structure easy ways into areas which would otherwise require multiple clicks through pages etc.