Sixto-
Have you tried this... from the entry page, click on the little gear (?) in the upper right corner. From the drop down list, pick Settings. Within Settings, pick "Viewing Email" and then all the way at the bottom, I can pick the "Basic" Mail Version. This makes everything a lot more like it used to be. Emails which I have replied to will now have a little symbol indicating that I have replied to them.

I tired to figure out how to get those carets back that you mentioned, but I had no luck.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).