I am using MAIL version 13.0 on OS X version 10.15.3.
In the past (previous used version)
![Example of colored Email in the Inbox]()
, I was able to color the back ground of the Email coming in my InBox with different colors.
I can still see the one that was colored in the past, but I could not find a way to color them with this version.
I have posted another question that you might be able to answer easily:
MAC OS X Mail, Discrepancy between the SMTP list in Mail preference, and in Mail new Email edit From: