Fast read/unread mark

I’m on message list.

When I hoover there is a small flag mark which I can click to have message marked. That is very good.

I would like to have similar functionality for read/unread orange ball. 

I would like to suggest make read/unread mark as outlook has. Instead of orange ball thin stripe on the left, so it wouldn’t hide reply arrow:

thank you for sharing your idea on the forum.