The email client has got an update with some fresh looks!
https://roundcube.net/
I've used it in the past but didn't like it much. While I was playing around with cPanel I noticed that I hadn't seen it in awhile. I normally use Horde but don't like that much either...or any of the other mail programs that are available for cPanel. But, this new version looks great and works very well. It also has a lot of customizable features!
I've looked at those kind of email clients, but never really got into them.