I just installed i-mscp1.1.0-beta1 on a test machine and was going through it. I love the little changes since the last time I installed it on a test machine; especially the upgrade to roundcube .8 (or possibly .8.1 by now to fix those venerability issues, eh? ;))
There is one thing I don't like though, and I'm not quite sure if it was part of i-mscp before the upgrade of roundcube.
The problem that I have is that each email you make is a separate account! This makes it just that much harder to check all of the email accounts on a domain.
Heck, I may make up to 7 different emails for different parts of my site and this would make it quite hard to check it all
I would think that a single login for the domain would be normal, then just have the different emails as "identities" in roundcube.
At least a "login as" button like what is integrated for ajaxplorer would be nice.