As a moderately large company we rent mail boxes for our employees at a hosting provider; a lot of mailboxes. These come in varying sizes, and naturally the larger you go the more expensive they become.
The other day I received an email requesting several new accounts and set upon creating these when I came across what seemed to be a rather inefficient allocation. The user had a mid-size tier, costing about €150 per year, while he could seemingly make do with the very smallest tier of about €50 annually.
This, of course, made me curious about our other allocations and I went looking for an overview of all our mail accounts' usage. No such luck. The only way to see how much of the rented space was actually being used was by navigating the - non-rest and stateful - web interface of our hosting provider and looking up the statistics for each user individually.