Is asking for a nice email client in Linux too much?

In thunderbird, I found no way to customize the "messages pane". Title, sender, time all in one line.

In KMail, the fonts and style of HTML signature is not working as expected.

In Evolution, the fonts scaling doesn't work correctly.

Fuck me!

Today my teacher said to not even touch our PC's because we can destroy them... It's not like we're already 18 and he's supposed to teach us how to use and repair them because the school subject is called "exploitation of computer technology devices". Also he said we can use books while exams so I wasted my time on learning where is every option in kmail, hopefully there was more questions about terminal and FTP... (I wanted to pass this exam with my own knowledge to learn anything and there's my 100%). This guy is so annoying :/

Ymail is the same yahoo mail