The new interface. First impressions:

The new interface. First impressions:

Playing with toys from the HTML5 box, just because you can... It doesn't mean you should.
 
The colour schemes are depressing, and the flat paper look is hideous if you're not using windows 8 or 10, because it does not fit in with the computer display scheme, at all.
Grey on grey, or lighter charcoal on dark charcoal, which is what all of the options seem to come down to... Do you have an aversion to white? 
 
There seems to be no way to change the pane layout for the window. You can have your messages display vertically to the right, or tough, take them in a new tab or window... Not good.
I want them horizontally in the same window.
 
There's no way to hide the bar containing contacts etc at the left hand side of the screen, which is bad. There's no option to resize the folders column, wasting yet more screen space, that's very bad.
 
I don't want to reply inline, quite often, I send replies that are more than a few quick lines. Don't go all GMail on us, let us have a proper new window for replies, just like the older version allows.
I need to be able to type multi page replies at times, replying inline does not work for that. As for the new toolbar, way to go coping other idiots who think that more clicks is more productive... It's not.
I want the options in front of me, not hidden in dropdowns.
The same applies to burying the options when it comes to who you are sending to, along with the CC and BCC...
 
It looks like you've designed an interface for a childs 'my first computer', not something for serious use. :(
 
You seem to want it to look clean and simple; I think you took it too far.
Your overall layout and look is wasteful of screen real-estate, and it's no better than any other of the horrible email providers out there now; if I wanted GMail, Outlook or Yahoo, I'd be with them. :(
 
Sometimes change is good... Sometimes it's the last thing you want or need though.... I have to say, I like the improved conversation view, but it's not enough to make the new interface a winner.
 
I seriously hope that you don't have any plans to retire the older style layout. I like having a decent webmail interface available.