Hello how to affect(allocate) a color of my choice for e-mails not read. No indication for rules(rulers).
Thank you
Cordially .joe

Hi Joe,
do you mean to set a color category, you can set up a rule for in Tools>Rules by choosing When mail is Received > Set Category.
You’ll need to manually change the category after you actually read it though, as rules only apply upon being received/sent.

Best regards,