Last update (Feb 17) brought new design (disputable) but also new icons. One particulary misleading. I can see now on my status bar a notification icon that clearly shows OPEN envelope instead of old one with @ logo.
This is wrong for two reasons:
1. OPEN envelope gives subconscious impression that for a reason my incoming mail has already been opened. By whom I ask and why my mail client allowed someone to touch my mail? ;-)
2. No recognizable logo doesn't properly identify the icon as connected to AquaMail app. I may have many apps using the envelope metaphor.
However pretty the icon may be, it is wrong.
I strongly recommend reconsidering the design of this icon.
Being a professional designer, I also warn the developer that Material Design guidelines are quackery and lead to a dead end, from both aesthetic and usability points of view. Minimalism is not the panaceum, and badly designed minimalism is a disaster. Try not to fall into this trap.
