> No arbitrary limits. Have as many users and store as much mail as you want. There is absolutely a limit. If you don't think you have a limit, it's because you don't have your asshole building his too-clever, "mountable PurelyMailFS" project or whatever yet. So you have a limit, but you aren't telling us what it is, or you don't know what it is. And an unknown arbitrary limit is worse than an arbitrary limit. EDIT:…
I've been with my unlimited backup provider for over a decade without any problems. They keep increasing their available fee but that's ok for how much I'm backing up (several terabytes).
It pays in life not to be too cynical.